7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 115
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 215
43 The upset metal on the outside of pressure-welded pipes shall be removed In pipes having a boreof 20 mm or more the height of the upset metal on theinside shall not exceed 03 mm
44 On fusion-welded pipes the inside and out-side weld reinforcement shall not exceed a value of
1 + 01 times seam width (mm)
5 Dimensions dimensional and geometricaltolerances
The dimensions and the dimensional and geometricaltolerances of the pipes shall comply with the require-ments specified in the standards The relevant stan-dards shall be stated in the order and made known tothe Surveyor The ends of pipes shall be cut off per-pendicular to the pipe axis and shall be free fromburrs Apart from pipes which are delivered in coils
all pipes shall appear straight to the eye
6 Integrity of pipes
All pipes shall be leak proof at the specified test pres-sures
7 General requirements applicable to thematerial
71 Chemical composition
The chemical composition of the pipe material (heatanalysis) shall conform to the Tables contained in thisSection or where applicable in the relevant standards
72 Weldability
Pipes in accordance with these Rules shall be weld-able by established workshop methods Wherevernecessary appropriate measures to safeguard qualityshall be taken eg preheating andor subsequent heattreatments see Part 3 ndash Welding
73 Mechanical properties
The tensile strength yield strength or proof stresselongation and where required the 02 or 1 proof stress at elevated temperatures and the impact
energy shall conform to the Tables contained in thisSection or where applicable in the relevant standardsIrrespective of the provisions contained in the stan-dards pipes made of steels tough at sub-zero tempera-tures shall at least meet the values specified in D forthe impact energy at the prescribed test temperature
74 Technological properties
Pipes shall meet the requirements for the ring testsspecified in 85
8 General instructions for testing
81 Test of chemical composition
The pipe manufacturer - and where appropriate themanufacturer of the starting material in the case of
welded pipes - shall verify the composition of eachheat and submit the relevant certificates to the Sur-veyor All the elements affecting compliance with therequired characteristics shall be specified in the cer-tificates
A product analysis shall be performed if there is anydoubt about the composition of pipes submitted fortesting
82 Test of mechanical properties
821 For testing pipes shall be grouped by steelgrades and dimensions - alloy steel pipes also by heats- into test batches of 100 pipes for outside diameters
le 500 mm and into 50 pipes for outside diametersgt 500 mm Residual quantities of up to 50 pipes maybe evenly allocated to the various test batches Wherewelded pipes are concerned a pipe is considered to bea cut length of not more than 30 m
822 For the performance of the tensile tests twopipes each shall be taken from the first two testbatches and one pipe each from every subsequentbatch Where a consignment comprises only 10 pipesor less it shall be sufficient to take one pipe Nor-mally longitudinal test specimens shall be taken fromthe sample pipes Where the diameter is 200 mm ormore test specimens may also be taken transverse tothe pipe axis From welded pipes additionally testspecimens are to be taken transversely to the weldedseam The weld reinforcement shall be machined off over the gauge length
83 Determination of the 02 proof stress at
elevated temperatures
Where pipes are designed for use at elevated tempera-tures on the basis of their high-temperature strengthcharacteristics the 02 or 1 proof stress shall beproved by a hot tensile test performed on one testspecimen per heat and per pipe size The test shall beperformed at the temperature which approximates
most closely to the level of the operating temperaturerounded off to the nearest 50 degC
The test may be dispensed with in the case of pipes torecognized standards the high-temperature mechani-cal properties of which are regarded as proven
84 Notch bar impact test
Where this test is specified for the individual types of pipe the number of sets of specimens and the positionof the specimens shall be determined in the same wayas the tensile test specimens called for in 82 The testshall be performed on Charpy V-notch specimens Incase of pipes with wall thickness above 30 mm thelongitudinal axis of the specimens is to be located in adistance of 14 of the pipe wall from the outer surfaceor as close as possible to this location
Chapter 2
Page 2ndash2
Section 2 Steel Pipes II - Part 1
GL 2009
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 315
Table 21 Types of ring test
Nominal wall thickness t
[mm]
Outside diameter of pipe
[mm]
t lt 2 2 le t le 16 16 lt t le 40
le 213 ring flattening test 1 3 ring flattening test 1 3 mdash
gt 213 le 146 ring flattening test 1 3 ring expanding test 1 3 ring flattening
gt 146 mdash ring tensile test 2 ring tensile test 2
1 The drift expanding test may also be applied to welded pipes
2 Instead of the ring tensile test the flattening test is applied to pipes with bores of 100 mm
3 The drift expanding test is applied to seamless and welded pipes in compliance with EN 10305-1 and -2 respectively
85 Technological tests
851 The pipes selected for testing shall be sub- jected to one of the ring tests specified in Table 21 provided that the wall thickness of the pipe does notexceed 40 mm For the performance of the test seeChapter 1 ndash Principles and Test Procedures Section 2F
The number of test specimens depends on the applica-tion of the pipes and is stipulated in the requirementsof B to E
852 In the ring flattening test the prescribed dis-tance between the plates H is calculated by applyingthe following formula
(1 C) aH
C a D
+=
+
H = distance between the platens [mm]
a = nominal wall thickness [mm]
D = outside diameter of pipe [mm]
C = constant determined by the steel grade (seethe provisions relating to technological testsaccording to B to E)
Where ring specimens of welded pipes are tested theweld shall be set at 90deg to the direction of the com-pressive load
853 In the ring expanding test the change in thediameter of the specimen expanded to the point of fracture shall at least equal the percentages shown inTable 22 depending on the material
854 When the ring tensile test is applied tospecimens of welded pipes the weld shall be set at90deg to the direction of the tensile load
Table 22 Diameter change in the ring expand-ing test
Minimum expansion [] for IDOD
ratios of Pipe
material
ge 09ge 08
lt 09
ge 07
lt 08
ge 06
lt 07
ge 05
lt 06ge 05
C- and
CMn-steels8 10 12 20 25 30
Mo- CrMo-
and
Ni-steels
6 8 10 15 30 30
Austeniticsteels
30
855 In the drift expanding test applied to austen-itic steel pipes a 20 expansion shall be achievedWhere pipes are made of other steels the requirementsof the other relevant standards shall be achieved
86 Test of surface finish and dimensions
The finish of the inside and outside surface of each
pipe shall be inspected by the manufacturer The di-ameters and wall thicknesses shall also be measuredThe pipes shall then be submitted to the Surveyor forfinal testing
87 Non-destructive tests
871 The pipes shall be subjected to non-destructive tests of the extent specified in B to EWhere tests of greater scope are prescribed in theorder or in the relevant standards or specificationsthese requirements shall be complied with
872 Other test specifications require special ap-proval by GL
873 The test equipment used for the continuousinspection of pipes shall be regularly calibrated using
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash3
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 415
pipes with artificial defects The efficiency of theequipment shall be demonstrated to the Surveyor
88 Tightness test
881 All pipes shall be tested for leaks by themanufacturer by applying the internal pressure test orwhere GL has given its consent by a suitable non-destructive testing method eg eddy current or strayflux techniques
882 The internal pressure test shall normally beperformed at a standard hydraulic test pressure of 80bar Where pipes are intended for an operating pres-
sure of le 25 bar the test pressure may be reduced to astandard value of 50 bar In the case of thin-walledpipes with large outside diameters the test pressureshall be limited so as to ensure that the yield strengthor 02 proof stress of the pipe material at roomtemperature is not exceeded Where in exceptionalcases testing with water is not possible another test-ing medium may be used after agreement with theSurveyor
883 Where a non-destructive method of testing isto be used instead of the internal hydraulic pressuretest it shall be able to cover the whole circumferenceof the pipe In addition the method of testing shallconform to a recognized standard (eg EN 10246) orto an approved test specification The efficiency of themethod shall be initially demonstrated to GL
89 Retests in the event of failure of specimens
If the requirements are not met by specimens sub- jected to tensile ring or notched bar impact tests or ifin the notched bar impact test one individual valuefalls below 70 of the stipulated average value thenbefore the unit testing quantity is rejected the proce-dure for retests described in Chapter 1 ndash Principles andTest Procedures Section 2 H may be applied
9 Marking of pipes
91 The manufacturer shall mark each pipe asfollows in at least one position about 300 mm from theend
ndash short designation or material number of the steelgrade
ndash manufacturers mark
ndash additionally the heat number or a heat code
92 Markings shall be applied with punchesPipes with sensitive surfaces or small wall thicknesseswhich may be damaged by punches shall be markedby another method eg by coloured imprint electricalengraving or rubber stamps
10 Certificates
101 For each consignment the manufacturer shallfurnish the Surveyor with a certificate containing thefollowing details
ndash purchaser and order number
ndash newbuilding and project number respectivelywhere known
ndash quantity dimensions and weight of deliveredpipes
ndash strength category or pipe grade
ndash steel grade or material specification
ndash method of pipe manufacture
ndash heat numbers
ndash chemical composition of the heat
ndash condition in which supplied or heat treatmentapplied
ndash marking
ndash results of material testing
102 The manufacturer shall also certify that allthe pipes have been successfully tightness tested andwhere applicable have successfully undergone a non-destructive test and a test of resistance to intercrystal-line corrosion
103 If the steels of which the pipes are made arenot produced in the pipe works a steelmakers certifi-cate shall be handed to the Surveyor indicating thenumbers and analyses of the heats The steelmakershall have been approved for the grades concerned Incase of doubt the Surveyor shall be given facilities forcarrying out a check
104 Where in exceptional cases pipes are testedon the premises of a stockist the latter shall keep aclear record of the origin of the pipes which shall bearthe marking specified in 9 and in the case of boilertubes the stamp of the works inspector as well In
addition the Surveyor shall be furnished with a cer-tificate issued by the pipe manufacturer and containingthe following details
ndash number dimensions and weight of the pipessupplied
ndash steel grade or material specification
ndash method of pipe manufacture and condition inwhich supplied or method of heat treatment
ndash heat numbers and analyses
ndash confirmation that the tightness test and where
specified the non-destructive test and test of re-sistance to intercrystalline corrosion have beencarried out
ndash marking
Chapter 2
Page 2ndash4
Section 2 Steel Pipes II - Part 1
GL 2009
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 515
B Pipes for General Purpose
1 Scope
11 These Rules are applicable to seamless andwelded pipes for use in pressure vessels equipmentpipelines and pressure cylinders Pipes conforming tothese rules are intended for use at normal ambienttemperatures
In general for these applications pipe grades accordingto Table 23 are to be used
If the pipes are intended for the manufacture of hy-draulic cylinders exposed to low service temperaturesa minimum impact energy of 41 J is to be proven onlongitudinal ISO-V specimens which may lead to theapplication of steels tough at sub-zero temperatures
12 Pipes conforming to these Rules may be usedfor the cargo and processing equipment of gas tankersprovided that the relevant design temperatures are notbelow 0 degC
2 Heat treatment
The pipes shall be in a proper heat-treated conditionThis is generally to be achieved by normalizing
Subsequent heat treatment need not be applied to hot-formed pipes if the hot forming operation ensures acorresponding structure of sufficient uniformity
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data given in Table 24 or where ap-propriate in the relevant standards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 25 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 25
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
Table 23 Standardized pipe grades
Corresponding pipe grade toStrength category or
pipe grade to
Table 25
EN 10216-1 1
or
EN 10217-1 2
EN 10216-3 1
or
EN 10217-3 2
EN 10305-1 EN 10305-2
GLndashR 360 P235TR2 E235+N E235+N
GLndashR 410 P265TR2 P275NL1 E275+N
GLndashR 490 P355N E355+N E355+N
1 seamless2 welded
Table 24 Chemical composition of unalloyed steel pipes
Chemical composition []Strength
category or
pipe grade Cmax Simax Mn max Pmax Smax Altot
GLndashR 360 017 035 120
GLndashR 410 021 035 140
GLndashR 490 022 055 160
0025 0020 ge 0020 1
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash5
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 615
Table 25 Mechanical and technological properties of unalloyed steel pipes
Elongation
A
[]
min
Impact energy
KV1
at 0 degC
[J]
min
Strength
category orpipe grade
Tensile
strength
Rm
[Nmm2]
Yield
strength
ReH
[Nmm2]
min
long transv long transv
GLndashR 360 360 ndash 500 235 25 23
GLndashR 410 410 ndash 570 255 21 19
GLndashR 490 490 ndash 650 310 19 17
41 27
1 For pipes with wall thickness gt 10 mm
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 Pipes with longitudinal weld seams and seam-less pipes of grade GLndashR490 are to be examined ac-
cording to one of the ring tests specified in A85 namely two pipes of one test batch
Apart from that for fusion-welded pipes a weld seambend test in accordance with Part 3 ndash Welding Chap-ter 2 ndash Design Fabrication and Inspection of WeldedJoints Section 5 D may be carried out applying abending mandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength category 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
On the pipes selected in accordance with A82 the
notched bar impact test shall be performed on trans-verse Charpy V-notch specimens if the outside diame-
ter is ge 200 mm If the outside diameter is lt 200 lon-
gitudinal specimens may be used
45 Test of surface finish and dimensions
The tests specified in A86 are to be performed
46 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length in accor-dance with EN 10246
461 Non-destructive testing of seamless pipes
The pipes shall be subjected to a non-destructive testfor detection of longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 acceptance category F2 Areas in way of pipe ends which have not been tested automaticallyshall be subjected either to a manual or semi-automaticultrasonic test in accordance with EN 10246-7 accep-tance category U2 subcategory C or shall be cut off
462 Non-destructive testing of pressure-weldedpipes
GL-R360 and GL-R410
The weld seam of pipe grades GL-R360 and GL-R410shall be tested over its entire length according to eitherEN 10246-3 acceptance category E3 or EN 10246-5acceptance category F3 or EN 10246-7 acceptance
category U3 subcategory C or EN 10246-8 accep-tance category U3 if applicable
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-8 acceptance category U3 or shall be cut off
GL-R490
Pipes of grade GL-R490 shall be subjected to an ultra-sonic test for detection of longitudinal defects according
to EN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-7 acceptance category U2 subcategory C orshall be cut off
Chapter 2
Page 2ndash6
Section 2 Steel Pipes II - Part 1
GL 2009
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 715
463 Non-destructive testing of fusion-weldedpipes
GL-R360 and GL-R410
The weld seam of SAW pipes of grades GL-R360and GL-R410 shall be tested either according toEN 10246-9 acceptance category U3 or EN 10246-10image quality class R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-9 acceptance category U3 or shall be examinedby means of radiographic testing according to EN10246-10 image quality class R2 or shall be cut off
GL-R490
The weld seam of pipes of grade GL-R490 shall betested over its entire length according to EN 10246-9acceptance category U2 or EN 10246-10 image qual-ity class R2
Areas of the weld seam in way of pipe ends whichhave not been tested automatically shall be subjectedeither to a manual or semi-automatic ultrasonic test orto radiographic testing as specified above or shall becut off
The base material is to be tested according to EN
10246-15 acceptance category U2The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end
Plate or strip edges adjacent to the weld seam are to betested within a 15 mm wide zone along the weld seam
in accordance with EN 10246-15 or EN 10246-16acceptance category U2 in each case
47 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
C High-Temperature Steel Pipes
1 Scope
These Rules are applicable to seamless and weldedpipes made of carbon steel carbon-manganese steelMo steel and Cr Mo steel and intended for steam boil-ers pressure vessels equipment and pipelines Pipesconforming to these Rules are intended for applicationat both ambient and elevated temperatures
For these applications standardized pipe grades aregenerally to be used The appropriate pipe grades areshown in Table 26
2 Heat treatment
Pipes shall be properly heat treated as follows
a) Carbon steel carbon-manganese steel and03 Mo steel pipes
ndash normalized
b) Pipes made of 1 Cr 05 Mo and 225 Cr 1 Mo
steels
ndash quenched and tempered
Subsequent heat treatment need not be applied to hotformed pipes covered by a) if the hot forming opera-tion ensures a corresponding structure of sufficientuniformity Under these conditions tempering may besufficient for the alloy pipes covered by b)
Table 26 Standardized pipes made of high-temperature steel grades
Corresponding pipe grade toStrength category
or
pipe grade EN 10216-2 EN 10217-2 ISO 9329-2 ISO 9330-2
GLndashR 360 W P235GH P235GH PH 23 PH 23
GLndashR 410 W P265GH P265GH PH 26 PH 26
GLndashR 460 W ndashndash ndashndash PH 29 ndashndash
GLndashR 510 W 20MnNb6 ndashndash PH 35 PH 35
03Mo 16Mo3 16Mo3 16Mo3 16Mo3
1Cr05Mo 13CrMo4-5 ndashndash 13CrMo4-5 13CrMo4-5225Cr1Mo 10CrMo9-10 ndashndash 11CrMo9-10 11CrMo9-10
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash7
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 215
43 The upset metal on the outside of pressure-welded pipes shall be removed In pipes having a boreof 20 mm or more the height of the upset metal on theinside shall not exceed 03 mm
44 On fusion-welded pipes the inside and out-side weld reinforcement shall not exceed a value of
1 + 01 times seam width (mm)
5 Dimensions dimensional and geometricaltolerances
The dimensions and the dimensional and geometricaltolerances of the pipes shall comply with the require-ments specified in the standards The relevant stan-dards shall be stated in the order and made known tothe Surveyor The ends of pipes shall be cut off per-pendicular to the pipe axis and shall be free fromburrs Apart from pipes which are delivered in coils
all pipes shall appear straight to the eye
6 Integrity of pipes
All pipes shall be leak proof at the specified test pres-sures
7 General requirements applicable to thematerial
71 Chemical composition
The chemical composition of the pipe material (heatanalysis) shall conform to the Tables contained in thisSection or where applicable in the relevant standards
72 Weldability
Pipes in accordance with these Rules shall be weld-able by established workshop methods Wherevernecessary appropriate measures to safeguard qualityshall be taken eg preheating andor subsequent heattreatments see Part 3 ndash Welding
73 Mechanical properties
The tensile strength yield strength or proof stresselongation and where required the 02 or 1 proof stress at elevated temperatures and the impact
energy shall conform to the Tables contained in thisSection or where applicable in the relevant standardsIrrespective of the provisions contained in the stan-dards pipes made of steels tough at sub-zero tempera-tures shall at least meet the values specified in D forthe impact energy at the prescribed test temperature
74 Technological properties
Pipes shall meet the requirements for the ring testsspecified in 85
8 General instructions for testing
81 Test of chemical composition
The pipe manufacturer - and where appropriate themanufacturer of the starting material in the case of
welded pipes - shall verify the composition of eachheat and submit the relevant certificates to the Sur-veyor All the elements affecting compliance with therequired characteristics shall be specified in the cer-tificates
A product analysis shall be performed if there is anydoubt about the composition of pipes submitted fortesting
82 Test of mechanical properties
821 For testing pipes shall be grouped by steelgrades and dimensions - alloy steel pipes also by heats- into test batches of 100 pipes for outside diameters
le 500 mm and into 50 pipes for outside diametersgt 500 mm Residual quantities of up to 50 pipes maybe evenly allocated to the various test batches Wherewelded pipes are concerned a pipe is considered to bea cut length of not more than 30 m
822 For the performance of the tensile tests twopipes each shall be taken from the first two testbatches and one pipe each from every subsequentbatch Where a consignment comprises only 10 pipesor less it shall be sufficient to take one pipe Nor-mally longitudinal test specimens shall be taken fromthe sample pipes Where the diameter is 200 mm ormore test specimens may also be taken transverse tothe pipe axis From welded pipes additionally testspecimens are to be taken transversely to the weldedseam The weld reinforcement shall be machined off over the gauge length
83 Determination of the 02 proof stress at
elevated temperatures
Where pipes are designed for use at elevated tempera-tures on the basis of their high-temperature strengthcharacteristics the 02 or 1 proof stress shall beproved by a hot tensile test performed on one testspecimen per heat and per pipe size The test shall beperformed at the temperature which approximates
most closely to the level of the operating temperaturerounded off to the nearest 50 degC
The test may be dispensed with in the case of pipes torecognized standards the high-temperature mechani-cal properties of which are regarded as proven
84 Notch bar impact test
Where this test is specified for the individual types of pipe the number of sets of specimens and the positionof the specimens shall be determined in the same wayas the tensile test specimens called for in 82 The testshall be performed on Charpy V-notch specimens Incase of pipes with wall thickness above 30 mm thelongitudinal axis of the specimens is to be located in adistance of 14 of the pipe wall from the outer surfaceor as close as possible to this location
Chapter 2
Page 2ndash2
Section 2 Steel Pipes II - Part 1
GL 2009
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 315
Table 21 Types of ring test
Nominal wall thickness t
[mm]
Outside diameter of pipe
[mm]
t lt 2 2 le t le 16 16 lt t le 40
le 213 ring flattening test 1 3 ring flattening test 1 3 mdash
gt 213 le 146 ring flattening test 1 3 ring expanding test 1 3 ring flattening
gt 146 mdash ring tensile test 2 ring tensile test 2
1 The drift expanding test may also be applied to welded pipes
2 Instead of the ring tensile test the flattening test is applied to pipes with bores of 100 mm
3 The drift expanding test is applied to seamless and welded pipes in compliance with EN 10305-1 and -2 respectively
85 Technological tests
851 The pipes selected for testing shall be sub- jected to one of the ring tests specified in Table 21 provided that the wall thickness of the pipe does notexceed 40 mm For the performance of the test seeChapter 1 ndash Principles and Test Procedures Section 2F
The number of test specimens depends on the applica-tion of the pipes and is stipulated in the requirementsof B to E
852 In the ring flattening test the prescribed dis-tance between the plates H is calculated by applyingthe following formula
(1 C) aH
C a D
+=
+
H = distance between the platens [mm]
a = nominal wall thickness [mm]
D = outside diameter of pipe [mm]
C = constant determined by the steel grade (seethe provisions relating to technological testsaccording to B to E)
Where ring specimens of welded pipes are tested theweld shall be set at 90deg to the direction of the com-pressive load
853 In the ring expanding test the change in thediameter of the specimen expanded to the point of fracture shall at least equal the percentages shown inTable 22 depending on the material
854 When the ring tensile test is applied tospecimens of welded pipes the weld shall be set at90deg to the direction of the tensile load
Table 22 Diameter change in the ring expand-ing test
Minimum expansion [] for IDOD
ratios of Pipe
material
ge 09ge 08
lt 09
ge 07
lt 08
ge 06
lt 07
ge 05
lt 06ge 05
C- and
CMn-steels8 10 12 20 25 30
Mo- CrMo-
and
Ni-steels
6 8 10 15 30 30
Austeniticsteels
30
855 In the drift expanding test applied to austen-itic steel pipes a 20 expansion shall be achievedWhere pipes are made of other steels the requirementsof the other relevant standards shall be achieved
86 Test of surface finish and dimensions
The finish of the inside and outside surface of each
pipe shall be inspected by the manufacturer The di-ameters and wall thicknesses shall also be measuredThe pipes shall then be submitted to the Surveyor forfinal testing
87 Non-destructive tests
871 The pipes shall be subjected to non-destructive tests of the extent specified in B to EWhere tests of greater scope are prescribed in theorder or in the relevant standards or specificationsthese requirements shall be complied with
872 Other test specifications require special ap-proval by GL
873 The test equipment used for the continuousinspection of pipes shall be regularly calibrated using
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash3
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 415
pipes with artificial defects The efficiency of theequipment shall be demonstrated to the Surveyor
88 Tightness test
881 All pipes shall be tested for leaks by themanufacturer by applying the internal pressure test orwhere GL has given its consent by a suitable non-destructive testing method eg eddy current or strayflux techniques
882 The internal pressure test shall normally beperformed at a standard hydraulic test pressure of 80bar Where pipes are intended for an operating pres-
sure of le 25 bar the test pressure may be reduced to astandard value of 50 bar In the case of thin-walledpipes with large outside diameters the test pressureshall be limited so as to ensure that the yield strengthor 02 proof stress of the pipe material at roomtemperature is not exceeded Where in exceptionalcases testing with water is not possible another test-ing medium may be used after agreement with theSurveyor
883 Where a non-destructive method of testing isto be used instead of the internal hydraulic pressuretest it shall be able to cover the whole circumferenceof the pipe In addition the method of testing shallconform to a recognized standard (eg EN 10246) orto an approved test specification The efficiency of themethod shall be initially demonstrated to GL
89 Retests in the event of failure of specimens
If the requirements are not met by specimens sub- jected to tensile ring or notched bar impact tests or ifin the notched bar impact test one individual valuefalls below 70 of the stipulated average value thenbefore the unit testing quantity is rejected the proce-dure for retests described in Chapter 1 ndash Principles andTest Procedures Section 2 H may be applied
9 Marking of pipes
91 The manufacturer shall mark each pipe asfollows in at least one position about 300 mm from theend
ndash short designation or material number of the steelgrade
ndash manufacturers mark
ndash additionally the heat number or a heat code
92 Markings shall be applied with punchesPipes with sensitive surfaces or small wall thicknesseswhich may be damaged by punches shall be markedby another method eg by coloured imprint electricalengraving or rubber stamps
10 Certificates
101 For each consignment the manufacturer shallfurnish the Surveyor with a certificate containing thefollowing details
ndash purchaser and order number
ndash newbuilding and project number respectivelywhere known
ndash quantity dimensions and weight of deliveredpipes
ndash strength category or pipe grade
ndash steel grade or material specification
ndash method of pipe manufacture
ndash heat numbers
ndash chemical composition of the heat
ndash condition in which supplied or heat treatmentapplied
ndash marking
ndash results of material testing
102 The manufacturer shall also certify that allthe pipes have been successfully tightness tested andwhere applicable have successfully undergone a non-destructive test and a test of resistance to intercrystal-line corrosion
103 If the steels of which the pipes are made arenot produced in the pipe works a steelmakers certifi-cate shall be handed to the Surveyor indicating thenumbers and analyses of the heats The steelmakershall have been approved for the grades concerned Incase of doubt the Surveyor shall be given facilities forcarrying out a check
104 Where in exceptional cases pipes are testedon the premises of a stockist the latter shall keep aclear record of the origin of the pipes which shall bearthe marking specified in 9 and in the case of boilertubes the stamp of the works inspector as well In
addition the Surveyor shall be furnished with a cer-tificate issued by the pipe manufacturer and containingthe following details
ndash number dimensions and weight of the pipessupplied
ndash steel grade or material specification
ndash method of pipe manufacture and condition inwhich supplied or method of heat treatment
ndash heat numbers and analyses
ndash confirmation that the tightness test and where
specified the non-destructive test and test of re-sistance to intercrystalline corrosion have beencarried out
ndash marking
Chapter 2
Page 2ndash4
Section 2 Steel Pipes II - Part 1
GL 2009
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 515
B Pipes for General Purpose
1 Scope
11 These Rules are applicable to seamless andwelded pipes for use in pressure vessels equipmentpipelines and pressure cylinders Pipes conforming tothese rules are intended for use at normal ambienttemperatures
In general for these applications pipe grades accordingto Table 23 are to be used
If the pipes are intended for the manufacture of hy-draulic cylinders exposed to low service temperaturesa minimum impact energy of 41 J is to be proven onlongitudinal ISO-V specimens which may lead to theapplication of steels tough at sub-zero temperatures
12 Pipes conforming to these Rules may be usedfor the cargo and processing equipment of gas tankersprovided that the relevant design temperatures are notbelow 0 degC
2 Heat treatment
The pipes shall be in a proper heat-treated conditionThis is generally to be achieved by normalizing
Subsequent heat treatment need not be applied to hot-formed pipes if the hot forming operation ensures acorresponding structure of sufficient uniformity
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data given in Table 24 or where ap-propriate in the relevant standards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 25 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 25
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
Table 23 Standardized pipe grades
Corresponding pipe grade toStrength category or
pipe grade to
Table 25
EN 10216-1 1
or
EN 10217-1 2
EN 10216-3 1
or
EN 10217-3 2
EN 10305-1 EN 10305-2
GLndashR 360 P235TR2 E235+N E235+N
GLndashR 410 P265TR2 P275NL1 E275+N
GLndashR 490 P355N E355+N E355+N
1 seamless2 welded
Table 24 Chemical composition of unalloyed steel pipes
Chemical composition []Strength
category or
pipe grade Cmax Simax Mn max Pmax Smax Altot
GLndashR 360 017 035 120
GLndashR 410 021 035 140
GLndashR 490 022 055 160
0025 0020 ge 0020 1
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash5
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 615
Table 25 Mechanical and technological properties of unalloyed steel pipes
Elongation
A
[]
min
Impact energy
KV1
at 0 degC
[J]
min
Strength
category orpipe grade
Tensile
strength
Rm
[Nmm2]
Yield
strength
ReH
[Nmm2]
min
long transv long transv
GLndashR 360 360 ndash 500 235 25 23
GLndashR 410 410 ndash 570 255 21 19
GLndashR 490 490 ndash 650 310 19 17
41 27
1 For pipes with wall thickness gt 10 mm
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 Pipes with longitudinal weld seams and seam-less pipes of grade GLndashR490 are to be examined ac-
cording to one of the ring tests specified in A85 namely two pipes of one test batch
Apart from that for fusion-welded pipes a weld seambend test in accordance with Part 3 ndash Welding Chap-ter 2 ndash Design Fabrication and Inspection of WeldedJoints Section 5 D may be carried out applying abending mandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength category 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
On the pipes selected in accordance with A82 the
notched bar impact test shall be performed on trans-verse Charpy V-notch specimens if the outside diame-
ter is ge 200 mm If the outside diameter is lt 200 lon-
gitudinal specimens may be used
45 Test of surface finish and dimensions
The tests specified in A86 are to be performed
46 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length in accor-dance with EN 10246
461 Non-destructive testing of seamless pipes
The pipes shall be subjected to a non-destructive testfor detection of longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 acceptance category F2 Areas in way of pipe ends which have not been tested automaticallyshall be subjected either to a manual or semi-automaticultrasonic test in accordance with EN 10246-7 accep-tance category U2 subcategory C or shall be cut off
462 Non-destructive testing of pressure-weldedpipes
GL-R360 and GL-R410
The weld seam of pipe grades GL-R360 and GL-R410shall be tested over its entire length according to eitherEN 10246-3 acceptance category E3 or EN 10246-5acceptance category F3 or EN 10246-7 acceptance
category U3 subcategory C or EN 10246-8 accep-tance category U3 if applicable
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-8 acceptance category U3 or shall be cut off
GL-R490
Pipes of grade GL-R490 shall be subjected to an ultra-sonic test for detection of longitudinal defects according
to EN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-7 acceptance category U2 subcategory C orshall be cut off
Chapter 2
Page 2ndash6
Section 2 Steel Pipes II - Part 1
GL 2009
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 715
463 Non-destructive testing of fusion-weldedpipes
GL-R360 and GL-R410
The weld seam of SAW pipes of grades GL-R360and GL-R410 shall be tested either according toEN 10246-9 acceptance category U3 or EN 10246-10image quality class R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-9 acceptance category U3 or shall be examinedby means of radiographic testing according to EN10246-10 image quality class R2 or shall be cut off
GL-R490
The weld seam of pipes of grade GL-R490 shall betested over its entire length according to EN 10246-9acceptance category U2 or EN 10246-10 image qual-ity class R2
Areas of the weld seam in way of pipe ends whichhave not been tested automatically shall be subjectedeither to a manual or semi-automatic ultrasonic test orto radiographic testing as specified above or shall becut off
The base material is to be tested according to EN
10246-15 acceptance category U2The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end
Plate or strip edges adjacent to the weld seam are to betested within a 15 mm wide zone along the weld seam
in accordance with EN 10246-15 or EN 10246-16acceptance category U2 in each case
47 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
C High-Temperature Steel Pipes
1 Scope
These Rules are applicable to seamless and weldedpipes made of carbon steel carbon-manganese steelMo steel and Cr Mo steel and intended for steam boil-ers pressure vessels equipment and pipelines Pipesconforming to these Rules are intended for applicationat both ambient and elevated temperatures
For these applications standardized pipe grades aregenerally to be used The appropriate pipe grades areshown in Table 26
2 Heat treatment
Pipes shall be properly heat treated as follows
a) Carbon steel carbon-manganese steel and03 Mo steel pipes
ndash normalized
b) Pipes made of 1 Cr 05 Mo and 225 Cr 1 Mo
steels
ndash quenched and tempered
Subsequent heat treatment need not be applied to hotformed pipes covered by a) if the hot forming opera-tion ensures a corresponding structure of sufficientuniformity Under these conditions tempering may besufficient for the alloy pipes covered by b)
Table 26 Standardized pipes made of high-temperature steel grades
Corresponding pipe grade toStrength category
or
pipe grade EN 10216-2 EN 10217-2 ISO 9329-2 ISO 9330-2
GLndashR 360 W P235GH P235GH PH 23 PH 23
GLndashR 410 W P265GH P265GH PH 26 PH 26
GLndashR 460 W ndashndash ndashndash PH 29 ndashndash
GLndashR 510 W 20MnNb6 ndashndash PH 35 PH 35
03Mo 16Mo3 16Mo3 16Mo3 16Mo3
1Cr05Mo 13CrMo4-5 ndashndash 13CrMo4-5 13CrMo4-5225Cr1Mo 10CrMo9-10 ndashndash 11CrMo9-10 11CrMo9-10
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash7
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 315
Table 21 Types of ring test
Nominal wall thickness t
[mm]
Outside diameter of pipe
[mm]
t lt 2 2 le t le 16 16 lt t le 40
le 213 ring flattening test 1 3 ring flattening test 1 3 mdash
gt 213 le 146 ring flattening test 1 3 ring expanding test 1 3 ring flattening
gt 146 mdash ring tensile test 2 ring tensile test 2
1 The drift expanding test may also be applied to welded pipes
2 Instead of the ring tensile test the flattening test is applied to pipes with bores of 100 mm
3 The drift expanding test is applied to seamless and welded pipes in compliance with EN 10305-1 and -2 respectively
85 Technological tests
851 The pipes selected for testing shall be sub- jected to one of the ring tests specified in Table 21 provided that the wall thickness of the pipe does notexceed 40 mm For the performance of the test seeChapter 1 ndash Principles and Test Procedures Section 2F
The number of test specimens depends on the applica-tion of the pipes and is stipulated in the requirementsof B to E
852 In the ring flattening test the prescribed dis-tance between the plates H is calculated by applyingthe following formula
(1 C) aH
C a D
+=
+
H = distance between the platens [mm]
a = nominal wall thickness [mm]
D = outside diameter of pipe [mm]
C = constant determined by the steel grade (seethe provisions relating to technological testsaccording to B to E)
Where ring specimens of welded pipes are tested theweld shall be set at 90deg to the direction of the com-pressive load
853 In the ring expanding test the change in thediameter of the specimen expanded to the point of fracture shall at least equal the percentages shown inTable 22 depending on the material
854 When the ring tensile test is applied tospecimens of welded pipes the weld shall be set at90deg to the direction of the tensile load
Table 22 Diameter change in the ring expand-ing test
Minimum expansion [] for IDOD
ratios of Pipe
material
ge 09ge 08
lt 09
ge 07
lt 08
ge 06
lt 07
ge 05
lt 06ge 05
C- and
CMn-steels8 10 12 20 25 30
Mo- CrMo-
and
Ni-steels
6 8 10 15 30 30
Austeniticsteels
30
855 In the drift expanding test applied to austen-itic steel pipes a 20 expansion shall be achievedWhere pipes are made of other steels the requirementsof the other relevant standards shall be achieved
86 Test of surface finish and dimensions
The finish of the inside and outside surface of each
pipe shall be inspected by the manufacturer The di-ameters and wall thicknesses shall also be measuredThe pipes shall then be submitted to the Surveyor forfinal testing
87 Non-destructive tests
871 The pipes shall be subjected to non-destructive tests of the extent specified in B to EWhere tests of greater scope are prescribed in theorder or in the relevant standards or specificationsthese requirements shall be complied with
872 Other test specifications require special ap-proval by GL
873 The test equipment used for the continuousinspection of pipes shall be regularly calibrated using
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash3
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 415
pipes with artificial defects The efficiency of theequipment shall be demonstrated to the Surveyor
88 Tightness test
881 All pipes shall be tested for leaks by themanufacturer by applying the internal pressure test orwhere GL has given its consent by a suitable non-destructive testing method eg eddy current or strayflux techniques
882 The internal pressure test shall normally beperformed at a standard hydraulic test pressure of 80bar Where pipes are intended for an operating pres-
sure of le 25 bar the test pressure may be reduced to astandard value of 50 bar In the case of thin-walledpipes with large outside diameters the test pressureshall be limited so as to ensure that the yield strengthor 02 proof stress of the pipe material at roomtemperature is not exceeded Where in exceptionalcases testing with water is not possible another test-ing medium may be used after agreement with theSurveyor
883 Where a non-destructive method of testing isto be used instead of the internal hydraulic pressuretest it shall be able to cover the whole circumferenceof the pipe In addition the method of testing shallconform to a recognized standard (eg EN 10246) orto an approved test specification The efficiency of themethod shall be initially demonstrated to GL
89 Retests in the event of failure of specimens
If the requirements are not met by specimens sub- jected to tensile ring or notched bar impact tests or ifin the notched bar impact test one individual valuefalls below 70 of the stipulated average value thenbefore the unit testing quantity is rejected the proce-dure for retests described in Chapter 1 ndash Principles andTest Procedures Section 2 H may be applied
9 Marking of pipes
91 The manufacturer shall mark each pipe asfollows in at least one position about 300 mm from theend
ndash short designation or material number of the steelgrade
ndash manufacturers mark
ndash additionally the heat number or a heat code
92 Markings shall be applied with punchesPipes with sensitive surfaces or small wall thicknesseswhich may be damaged by punches shall be markedby another method eg by coloured imprint electricalengraving or rubber stamps
10 Certificates
101 For each consignment the manufacturer shallfurnish the Surveyor with a certificate containing thefollowing details
ndash purchaser and order number
ndash newbuilding and project number respectivelywhere known
ndash quantity dimensions and weight of deliveredpipes
ndash strength category or pipe grade
ndash steel grade or material specification
ndash method of pipe manufacture
ndash heat numbers
ndash chemical composition of the heat
ndash condition in which supplied or heat treatmentapplied
ndash marking
ndash results of material testing
102 The manufacturer shall also certify that allthe pipes have been successfully tightness tested andwhere applicable have successfully undergone a non-destructive test and a test of resistance to intercrystal-line corrosion
103 If the steels of which the pipes are made arenot produced in the pipe works a steelmakers certifi-cate shall be handed to the Surveyor indicating thenumbers and analyses of the heats The steelmakershall have been approved for the grades concerned Incase of doubt the Surveyor shall be given facilities forcarrying out a check
104 Where in exceptional cases pipes are testedon the premises of a stockist the latter shall keep aclear record of the origin of the pipes which shall bearthe marking specified in 9 and in the case of boilertubes the stamp of the works inspector as well In
addition the Surveyor shall be furnished with a cer-tificate issued by the pipe manufacturer and containingthe following details
ndash number dimensions and weight of the pipessupplied
ndash steel grade or material specification
ndash method of pipe manufacture and condition inwhich supplied or method of heat treatment
ndash heat numbers and analyses
ndash confirmation that the tightness test and where
specified the non-destructive test and test of re-sistance to intercrystalline corrosion have beencarried out
ndash marking
Chapter 2
Page 2ndash4
Section 2 Steel Pipes II - Part 1
GL 2009
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 515
B Pipes for General Purpose
1 Scope
11 These Rules are applicable to seamless andwelded pipes for use in pressure vessels equipmentpipelines and pressure cylinders Pipes conforming tothese rules are intended for use at normal ambienttemperatures
In general for these applications pipe grades accordingto Table 23 are to be used
If the pipes are intended for the manufacture of hy-draulic cylinders exposed to low service temperaturesa minimum impact energy of 41 J is to be proven onlongitudinal ISO-V specimens which may lead to theapplication of steels tough at sub-zero temperatures
12 Pipes conforming to these Rules may be usedfor the cargo and processing equipment of gas tankersprovided that the relevant design temperatures are notbelow 0 degC
2 Heat treatment
The pipes shall be in a proper heat-treated conditionThis is generally to be achieved by normalizing
Subsequent heat treatment need not be applied to hot-formed pipes if the hot forming operation ensures acorresponding structure of sufficient uniformity
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data given in Table 24 or where ap-propriate in the relevant standards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 25 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 25
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
Table 23 Standardized pipe grades
Corresponding pipe grade toStrength category or
pipe grade to
Table 25
EN 10216-1 1
or
EN 10217-1 2
EN 10216-3 1
or
EN 10217-3 2
EN 10305-1 EN 10305-2
GLndashR 360 P235TR2 E235+N E235+N
GLndashR 410 P265TR2 P275NL1 E275+N
GLndashR 490 P355N E355+N E355+N
1 seamless2 welded
Table 24 Chemical composition of unalloyed steel pipes
Chemical composition []Strength
category or
pipe grade Cmax Simax Mn max Pmax Smax Altot
GLndashR 360 017 035 120
GLndashR 410 021 035 140
GLndashR 490 022 055 160
0025 0020 ge 0020 1
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash5
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 615
Table 25 Mechanical and technological properties of unalloyed steel pipes
Elongation
A
[]
min
Impact energy
KV1
at 0 degC
[J]
min
Strength
category orpipe grade
Tensile
strength
Rm
[Nmm2]
Yield
strength
ReH
[Nmm2]
min
long transv long transv
GLndashR 360 360 ndash 500 235 25 23
GLndashR 410 410 ndash 570 255 21 19
GLndashR 490 490 ndash 650 310 19 17
41 27
1 For pipes with wall thickness gt 10 mm
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 Pipes with longitudinal weld seams and seam-less pipes of grade GLndashR490 are to be examined ac-
cording to one of the ring tests specified in A85 namely two pipes of one test batch
Apart from that for fusion-welded pipes a weld seambend test in accordance with Part 3 ndash Welding Chap-ter 2 ndash Design Fabrication and Inspection of WeldedJoints Section 5 D may be carried out applying abending mandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength category 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
On the pipes selected in accordance with A82 the
notched bar impact test shall be performed on trans-verse Charpy V-notch specimens if the outside diame-
ter is ge 200 mm If the outside diameter is lt 200 lon-
gitudinal specimens may be used
45 Test of surface finish and dimensions
The tests specified in A86 are to be performed
46 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length in accor-dance with EN 10246
461 Non-destructive testing of seamless pipes
The pipes shall be subjected to a non-destructive testfor detection of longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 acceptance category F2 Areas in way of pipe ends which have not been tested automaticallyshall be subjected either to a manual or semi-automaticultrasonic test in accordance with EN 10246-7 accep-tance category U2 subcategory C or shall be cut off
462 Non-destructive testing of pressure-weldedpipes
GL-R360 and GL-R410
The weld seam of pipe grades GL-R360 and GL-R410shall be tested over its entire length according to eitherEN 10246-3 acceptance category E3 or EN 10246-5acceptance category F3 or EN 10246-7 acceptance
category U3 subcategory C or EN 10246-8 accep-tance category U3 if applicable
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-8 acceptance category U3 or shall be cut off
GL-R490
Pipes of grade GL-R490 shall be subjected to an ultra-sonic test for detection of longitudinal defects according
to EN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-7 acceptance category U2 subcategory C orshall be cut off
Chapter 2
Page 2ndash6
Section 2 Steel Pipes II - Part 1
GL 2009
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 715
463 Non-destructive testing of fusion-weldedpipes
GL-R360 and GL-R410
The weld seam of SAW pipes of grades GL-R360and GL-R410 shall be tested either according toEN 10246-9 acceptance category U3 or EN 10246-10image quality class R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-9 acceptance category U3 or shall be examinedby means of radiographic testing according to EN10246-10 image quality class R2 or shall be cut off
GL-R490
The weld seam of pipes of grade GL-R490 shall betested over its entire length according to EN 10246-9acceptance category U2 or EN 10246-10 image qual-ity class R2
Areas of the weld seam in way of pipe ends whichhave not been tested automatically shall be subjectedeither to a manual or semi-automatic ultrasonic test orto radiographic testing as specified above or shall becut off
The base material is to be tested according to EN
10246-15 acceptance category U2The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end
Plate or strip edges adjacent to the weld seam are to betested within a 15 mm wide zone along the weld seam
in accordance with EN 10246-15 or EN 10246-16acceptance category U2 in each case
47 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
C High-Temperature Steel Pipes
1 Scope
These Rules are applicable to seamless and weldedpipes made of carbon steel carbon-manganese steelMo steel and Cr Mo steel and intended for steam boil-ers pressure vessels equipment and pipelines Pipesconforming to these Rules are intended for applicationat both ambient and elevated temperatures
For these applications standardized pipe grades aregenerally to be used The appropriate pipe grades areshown in Table 26
2 Heat treatment
Pipes shall be properly heat treated as follows
a) Carbon steel carbon-manganese steel and03 Mo steel pipes
ndash normalized
b) Pipes made of 1 Cr 05 Mo and 225 Cr 1 Mo
steels
ndash quenched and tempered
Subsequent heat treatment need not be applied to hotformed pipes covered by a) if the hot forming opera-tion ensures a corresponding structure of sufficientuniformity Under these conditions tempering may besufficient for the alloy pipes covered by b)
Table 26 Standardized pipes made of high-temperature steel grades
Corresponding pipe grade toStrength category
or
pipe grade EN 10216-2 EN 10217-2 ISO 9329-2 ISO 9330-2
GLndashR 360 W P235GH P235GH PH 23 PH 23
GLndashR 410 W P265GH P265GH PH 26 PH 26
GLndashR 460 W ndashndash ndashndash PH 29 ndashndash
GLndashR 510 W 20MnNb6 ndashndash PH 35 PH 35
03Mo 16Mo3 16Mo3 16Mo3 16Mo3
1Cr05Mo 13CrMo4-5 ndashndash 13CrMo4-5 13CrMo4-5225Cr1Mo 10CrMo9-10 ndashndash 11CrMo9-10 11CrMo9-10
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash7
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 415
pipes with artificial defects The efficiency of theequipment shall be demonstrated to the Surveyor
88 Tightness test
881 All pipes shall be tested for leaks by themanufacturer by applying the internal pressure test orwhere GL has given its consent by a suitable non-destructive testing method eg eddy current or strayflux techniques
882 The internal pressure test shall normally beperformed at a standard hydraulic test pressure of 80bar Where pipes are intended for an operating pres-
sure of le 25 bar the test pressure may be reduced to astandard value of 50 bar In the case of thin-walledpipes with large outside diameters the test pressureshall be limited so as to ensure that the yield strengthor 02 proof stress of the pipe material at roomtemperature is not exceeded Where in exceptionalcases testing with water is not possible another test-ing medium may be used after agreement with theSurveyor
883 Where a non-destructive method of testing isto be used instead of the internal hydraulic pressuretest it shall be able to cover the whole circumferenceof the pipe In addition the method of testing shallconform to a recognized standard (eg EN 10246) orto an approved test specification The efficiency of themethod shall be initially demonstrated to GL
89 Retests in the event of failure of specimens
If the requirements are not met by specimens sub- jected to tensile ring or notched bar impact tests or ifin the notched bar impact test one individual valuefalls below 70 of the stipulated average value thenbefore the unit testing quantity is rejected the proce-dure for retests described in Chapter 1 ndash Principles andTest Procedures Section 2 H may be applied
9 Marking of pipes
91 The manufacturer shall mark each pipe asfollows in at least one position about 300 mm from theend
ndash short designation or material number of the steelgrade
ndash manufacturers mark
ndash additionally the heat number or a heat code
92 Markings shall be applied with punchesPipes with sensitive surfaces or small wall thicknesseswhich may be damaged by punches shall be markedby another method eg by coloured imprint electricalengraving or rubber stamps
10 Certificates
101 For each consignment the manufacturer shallfurnish the Surveyor with a certificate containing thefollowing details
ndash purchaser and order number
ndash newbuilding and project number respectivelywhere known
ndash quantity dimensions and weight of deliveredpipes
ndash strength category or pipe grade
ndash steel grade or material specification
ndash method of pipe manufacture
ndash heat numbers
ndash chemical composition of the heat
ndash condition in which supplied or heat treatmentapplied
ndash marking
ndash results of material testing
102 The manufacturer shall also certify that allthe pipes have been successfully tightness tested andwhere applicable have successfully undergone a non-destructive test and a test of resistance to intercrystal-line corrosion
103 If the steels of which the pipes are made arenot produced in the pipe works a steelmakers certifi-cate shall be handed to the Surveyor indicating thenumbers and analyses of the heats The steelmakershall have been approved for the grades concerned Incase of doubt the Surveyor shall be given facilities forcarrying out a check
104 Where in exceptional cases pipes are testedon the premises of a stockist the latter shall keep aclear record of the origin of the pipes which shall bearthe marking specified in 9 and in the case of boilertubes the stamp of the works inspector as well In
addition the Surveyor shall be furnished with a cer-tificate issued by the pipe manufacturer and containingthe following details
ndash number dimensions and weight of the pipessupplied
ndash steel grade or material specification
ndash method of pipe manufacture and condition inwhich supplied or method of heat treatment
ndash heat numbers and analyses
ndash confirmation that the tightness test and where
specified the non-destructive test and test of re-sistance to intercrystalline corrosion have beencarried out
ndash marking
Chapter 2
Page 2ndash4
Section 2 Steel Pipes II - Part 1
GL 2009
A
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 515
B Pipes for General Purpose
1 Scope
11 These Rules are applicable to seamless andwelded pipes for use in pressure vessels equipmentpipelines and pressure cylinders Pipes conforming tothese rules are intended for use at normal ambienttemperatures
In general for these applications pipe grades accordingto Table 23 are to be used
If the pipes are intended for the manufacture of hy-draulic cylinders exposed to low service temperaturesa minimum impact energy of 41 J is to be proven onlongitudinal ISO-V specimens which may lead to theapplication of steels tough at sub-zero temperatures
12 Pipes conforming to these Rules may be usedfor the cargo and processing equipment of gas tankersprovided that the relevant design temperatures are notbelow 0 degC
2 Heat treatment
The pipes shall be in a proper heat-treated conditionThis is generally to be achieved by normalizing
Subsequent heat treatment need not be applied to hot-formed pipes if the hot forming operation ensures acorresponding structure of sufficient uniformity
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data given in Table 24 or where ap-propriate in the relevant standards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 25 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 25
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
Table 23 Standardized pipe grades
Corresponding pipe grade toStrength category or
pipe grade to
Table 25
EN 10216-1 1
or
EN 10217-1 2
EN 10216-3 1
or
EN 10217-3 2
EN 10305-1 EN 10305-2
GLndashR 360 P235TR2 E235+N E235+N
GLndashR 410 P265TR2 P275NL1 E275+N
GLndashR 490 P355N E355+N E355+N
1 seamless2 welded
Table 24 Chemical composition of unalloyed steel pipes
Chemical composition []Strength
category or
pipe grade Cmax Simax Mn max Pmax Smax Altot
GLndashR 360 017 035 120
GLndashR 410 021 035 140
GLndashR 490 022 055 160
0025 0020 ge 0020 1
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash5
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 615
Table 25 Mechanical and technological properties of unalloyed steel pipes
Elongation
A
[]
min
Impact energy
KV1
at 0 degC
[J]
min
Strength
category orpipe grade
Tensile
strength
Rm
[Nmm2]
Yield
strength
ReH
[Nmm2]
min
long transv long transv
GLndashR 360 360 ndash 500 235 25 23
GLndashR 410 410 ndash 570 255 21 19
GLndashR 490 490 ndash 650 310 19 17
41 27
1 For pipes with wall thickness gt 10 mm
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 Pipes with longitudinal weld seams and seam-less pipes of grade GLndashR490 are to be examined ac-
cording to one of the ring tests specified in A85 namely two pipes of one test batch
Apart from that for fusion-welded pipes a weld seambend test in accordance with Part 3 ndash Welding Chap-ter 2 ndash Design Fabrication and Inspection of WeldedJoints Section 5 D may be carried out applying abending mandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength category 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
On the pipes selected in accordance with A82 the
notched bar impact test shall be performed on trans-verse Charpy V-notch specimens if the outside diame-
ter is ge 200 mm If the outside diameter is lt 200 lon-
gitudinal specimens may be used
45 Test of surface finish and dimensions
The tests specified in A86 are to be performed
46 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length in accor-dance with EN 10246
461 Non-destructive testing of seamless pipes
The pipes shall be subjected to a non-destructive testfor detection of longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 acceptance category F2 Areas in way of pipe ends which have not been tested automaticallyshall be subjected either to a manual or semi-automaticultrasonic test in accordance with EN 10246-7 accep-tance category U2 subcategory C or shall be cut off
462 Non-destructive testing of pressure-weldedpipes
GL-R360 and GL-R410
The weld seam of pipe grades GL-R360 and GL-R410shall be tested over its entire length according to eitherEN 10246-3 acceptance category E3 or EN 10246-5acceptance category F3 or EN 10246-7 acceptance
category U3 subcategory C or EN 10246-8 accep-tance category U3 if applicable
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-8 acceptance category U3 or shall be cut off
GL-R490
Pipes of grade GL-R490 shall be subjected to an ultra-sonic test for detection of longitudinal defects according
to EN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-7 acceptance category U2 subcategory C orshall be cut off
Chapter 2
Page 2ndash6
Section 2 Steel Pipes II - Part 1
GL 2009
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 715
463 Non-destructive testing of fusion-weldedpipes
GL-R360 and GL-R410
The weld seam of SAW pipes of grades GL-R360and GL-R410 shall be tested either according toEN 10246-9 acceptance category U3 or EN 10246-10image quality class R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-9 acceptance category U3 or shall be examinedby means of radiographic testing according to EN10246-10 image quality class R2 or shall be cut off
GL-R490
The weld seam of pipes of grade GL-R490 shall betested over its entire length according to EN 10246-9acceptance category U2 or EN 10246-10 image qual-ity class R2
Areas of the weld seam in way of pipe ends whichhave not been tested automatically shall be subjectedeither to a manual or semi-automatic ultrasonic test orto radiographic testing as specified above or shall becut off
The base material is to be tested according to EN
10246-15 acceptance category U2The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end
Plate or strip edges adjacent to the weld seam are to betested within a 15 mm wide zone along the weld seam
in accordance with EN 10246-15 or EN 10246-16acceptance category U2 in each case
47 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
C High-Temperature Steel Pipes
1 Scope
These Rules are applicable to seamless and weldedpipes made of carbon steel carbon-manganese steelMo steel and Cr Mo steel and intended for steam boil-ers pressure vessels equipment and pipelines Pipesconforming to these Rules are intended for applicationat both ambient and elevated temperatures
For these applications standardized pipe grades aregenerally to be used The appropriate pipe grades areshown in Table 26
2 Heat treatment
Pipes shall be properly heat treated as follows
a) Carbon steel carbon-manganese steel and03 Mo steel pipes
ndash normalized
b) Pipes made of 1 Cr 05 Mo and 225 Cr 1 Mo
steels
ndash quenched and tempered
Subsequent heat treatment need not be applied to hotformed pipes covered by a) if the hot forming opera-tion ensures a corresponding structure of sufficientuniformity Under these conditions tempering may besufficient for the alloy pipes covered by b)
Table 26 Standardized pipes made of high-temperature steel grades
Corresponding pipe grade toStrength category
or
pipe grade EN 10216-2 EN 10217-2 ISO 9329-2 ISO 9330-2
GLndashR 360 W P235GH P235GH PH 23 PH 23
GLndashR 410 W P265GH P265GH PH 26 PH 26
GLndashR 460 W ndashndash ndashndash PH 29 ndashndash
GLndashR 510 W 20MnNb6 ndashndash PH 35 PH 35
03Mo 16Mo3 16Mo3 16Mo3 16Mo3
1Cr05Mo 13CrMo4-5 ndashndash 13CrMo4-5 13CrMo4-5225Cr1Mo 10CrMo9-10 ndashndash 11CrMo9-10 11CrMo9-10
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash7
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 515
B Pipes for General Purpose
1 Scope
11 These Rules are applicable to seamless andwelded pipes for use in pressure vessels equipmentpipelines and pressure cylinders Pipes conforming tothese rules are intended for use at normal ambienttemperatures
In general for these applications pipe grades accordingto Table 23 are to be used
If the pipes are intended for the manufacture of hy-draulic cylinders exposed to low service temperaturesa minimum impact energy of 41 J is to be proven onlongitudinal ISO-V specimens which may lead to theapplication of steels tough at sub-zero temperatures
12 Pipes conforming to these Rules may be usedfor the cargo and processing equipment of gas tankersprovided that the relevant design temperatures are notbelow 0 degC
2 Heat treatment
The pipes shall be in a proper heat-treated conditionThis is generally to be achieved by normalizing
Subsequent heat treatment need not be applied to hot-formed pipes if the hot forming operation ensures acorresponding structure of sufficient uniformity
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data given in Table 24 or where ap-propriate in the relevant standards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 25 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 25
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
Table 23 Standardized pipe grades
Corresponding pipe grade toStrength category or
pipe grade to
Table 25
EN 10216-1 1
or
EN 10217-1 2
EN 10216-3 1
or
EN 10217-3 2
EN 10305-1 EN 10305-2
GLndashR 360 P235TR2 E235+N E235+N
GLndashR 410 P265TR2 P275NL1 E275+N
GLndashR 490 P355N E355+N E355+N
1 seamless2 welded
Table 24 Chemical composition of unalloyed steel pipes
Chemical composition []Strength
category or
pipe grade Cmax Simax Mn max Pmax Smax Altot
GLndashR 360 017 035 120
GLndashR 410 021 035 140
GLndashR 490 022 055 160
0025 0020 ge 0020 1
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash5
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 615
Table 25 Mechanical and technological properties of unalloyed steel pipes
Elongation
A
[]
min
Impact energy
KV1
at 0 degC
[J]
min
Strength
category orpipe grade
Tensile
strength
Rm
[Nmm2]
Yield
strength
ReH
[Nmm2]
min
long transv long transv
GLndashR 360 360 ndash 500 235 25 23
GLndashR 410 410 ndash 570 255 21 19
GLndashR 490 490 ndash 650 310 19 17
41 27
1 For pipes with wall thickness gt 10 mm
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 Pipes with longitudinal weld seams and seam-less pipes of grade GLndashR490 are to be examined ac-
cording to one of the ring tests specified in A85 namely two pipes of one test batch
Apart from that for fusion-welded pipes a weld seambend test in accordance with Part 3 ndash Welding Chap-ter 2 ndash Design Fabrication and Inspection of WeldedJoints Section 5 D may be carried out applying abending mandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength category 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
On the pipes selected in accordance with A82 the
notched bar impact test shall be performed on trans-verse Charpy V-notch specimens if the outside diame-
ter is ge 200 mm If the outside diameter is lt 200 lon-
gitudinal specimens may be used
45 Test of surface finish and dimensions
The tests specified in A86 are to be performed
46 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length in accor-dance with EN 10246
461 Non-destructive testing of seamless pipes
The pipes shall be subjected to a non-destructive testfor detection of longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 acceptance category F2 Areas in way of pipe ends which have not been tested automaticallyshall be subjected either to a manual or semi-automaticultrasonic test in accordance with EN 10246-7 accep-tance category U2 subcategory C or shall be cut off
462 Non-destructive testing of pressure-weldedpipes
GL-R360 and GL-R410
The weld seam of pipe grades GL-R360 and GL-R410shall be tested over its entire length according to eitherEN 10246-3 acceptance category E3 or EN 10246-5acceptance category F3 or EN 10246-7 acceptance
category U3 subcategory C or EN 10246-8 accep-tance category U3 if applicable
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-8 acceptance category U3 or shall be cut off
GL-R490
Pipes of grade GL-R490 shall be subjected to an ultra-sonic test for detection of longitudinal defects according
to EN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-7 acceptance category U2 subcategory C orshall be cut off
Chapter 2
Page 2ndash6
Section 2 Steel Pipes II - Part 1
GL 2009
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 715
463 Non-destructive testing of fusion-weldedpipes
GL-R360 and GL-R410
The weld seam of SAW pipes of grades GL-R360and GL-R410 shall be tested either according toEN 10246-9 acceptance category U3 or EN 10246-10image quality class R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-9 acceptance category U3 or shall be examinedby means of radiographic testing according to EN10246-10 image quality class R2 or shall be cut off
GL-R490
The weld seam of pipes of grade GL-R490 shall betested over its entire length according to EN 10246-9acceptance category U2 or EN 10246-10 image qual-ity class R2
Areas of the weld seam in way of pipe ends whichhave not been tested automatically shall be subjectedeither to a manual or semi-automatic ultrasonic test orto radiographic testing as specified above or shall becut off
The base material is to be tested according to EN
10246-15 acceptance category U2The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end
Plate or strip edges adjacent to the weld seam are to betested within a 15 mm wide zone along the weld seam
in accordance with EN 10246-15 or EN 10246-16acceptance category U2 in each case
47 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
C High-Temperature Steel Pipes
1 Scope
These Rules are applicable to seamless and weldedpipes made of carbon steel carbon-manganese steelMo steel and Cr Mo steel and intended for steam boil-ers pressure vessels equipment and pipelines Pipesconforming to these Rules are intended for applicationat both ambient and elevated temperatures
For these applications standardized pipe grades aregenerally to be used The appropriate pipe grades areshown in Table 26
2 Heat treatment
Pipes shall be properly heat treated as follows
a) Carbon steel carbon-manganese steel and03 Mo steel pipes
ndash normalized
b) Pipes made of 1 Cr 05 Mo and 225 Cr 1 Mo
steels
ndash quenched and tempered
Subsequent heat treatment need not be applied to hotformed pipes covered by a) if the hot forming opera-tion ensures a corresponding structure of sufficientuniformity Under these conditions tempering may besufficient for the alloy pipes covered by b)
Table 26 Standardized pipes made of high-temperature steel grades
Corresponding pipe grade toStrength category
or
pipe grade EN 10216-2 EN 10217-2 ISO 9329-2 ISO 9330-2
GLndashR 360 W P235GH P235GH PH 23 PH 23
GLndashR 410 W P265GH P265GH PH 26 PH 26
GLndashR 460 W ndashndash ndashndash PH 29 ndashndash
GLndashR 510 W 20MnNb6 ndashndash PH 35 PH 35
03Mo 16Mo3 16Mo3 16Mo3 16Mo3
1Cr05Mo 13CrMo4-5 ndashndash 13CrMo4-5 13CrMo4-5225Cr1Mo 10CrMo9-10 ndashndash 11CrMo9-10 11CrMo9-10
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash7
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 615
Table 25 Mechanical and technological properties of unalloyed steel pipes
Elongation
A
[]
min
Impact energy
KV1
at 0 degC
[J]
min
Strength
category orpipe grade
Tensile
strength
Rm
[Nmm2]
Yield
strength
ReH
[Nmm2]
min
long transv long transv
GLndashR 360 360 ndash 500 235 25 23
GLndashR 410 410 ndash 570 255 21 19
GLndashR 490 490 ndash 650 310 19 17
41 27
1 For pipes with wall thickness gt 10 mm
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 Pipes with longitudinal weld seams and seam-less pipes of grade GLndashR490 are to be examined ac-
cording to one of the ring tests specified in A85 namely two pipes of one test batch
Apart from that for fusion-welded pipes a weld seambend test in accordance with Part 3 ndash Welding Chap-ter 2 ndash Design Fabrication and Inspection of WeldedJoints Section 5 D may be carried out applying abending mandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength category 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
On the pipes selected in accordance with A82 the
notched bar impact test shall be performed on trans-verse Charpy V-notch specimens if the outside diame-
ter is ge 200 mm If the outside diameter is lt 200 lon-
gitudinal specimens may be used
45 Test of surface finish and dimensions
The tests specified in A86 are to be performed
46 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length in accor-dance with EN 10246
461 Non-destructive testing of seamless pipes
The pipes shall be subjected to a non-destructive testfor detection of longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 acceptance category F2 Areas in way of pipe ends which have not been tested automaticallyshall be subjected either to a manual or semi-automaticultrasonic test in accordance with EN 10246-7 accep-tance category U2 subcategory C or shall be cut off
462 Non-destructive testing of pressure-weldedpipes
GL-R360 and GL-R410
The weld seam of pipe grades GL-R360 and GL-R410shall be tested over its entire length according to eitherEN 10246-3 acceptance category E3 or EN 10246-5acceptance category F3 or EN 10246-7 acceptance
category U3 subcategory C or EN 10246-8 accep-tance category U3 if applicable
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-8 acceptance category U3 or shall be cut off
GL-R490
Pipes of grade GL-R490 shall be subjected to an ultra-sonic test for detection of longitudinal defects according
to EN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-7 acceptance category U2 subcategory C orshall be cut off
Chapter 2
Page 2ndash6
Section 2 Steel Pipes II - Part 1
GL 2009
B
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 715
463 Non-destructive testing of fusion-weldedpipes
GL-R360 and GL-R410
The weld seam of SAW pipes of grades GL-R360and GL-R410 shall be tested either according toEN 10246-9 acceptance category U3 or EN 10246-10image quality class R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-9 acceptance category U3 or shall be examinedby means of radiographic testing according to EN10246-10 image quality class R2 or shall be cut off
GL-R490
The weld seam of pipes of grade GL-R490 shall betested over its entire length according to EN 10246-9acceptance category U2 or EN 10246-10 image qual-ity class R2
Areas of the weld seam in way of pipe ends whichhave not been tested automatically shall be subjectedeither to a manual or semi-automatic ultrasonic test orto radiographic testing as specified above or shall becut off
The base material is to be tested according to EN
10246-15 acceptance category U2The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end
Plate or strip edges adjacent to the weld seam are to betested within a 15 mm wide zone along the weld seam
in accordance with EN 10246-15 or EN 10246-16acceptance category U2 in each case
47 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
C High-Temperature Steel Pipes
1 Scope
These Rules are applicable to seamless and weldedpipes made of carbon steel carbon-manganese steelMo steel and Cr Mo steel and intended for steam boil-ers pressure vessels equipment and pipelines Pipesconforming to these Rules are intended for applicationat both ambient and elevated temperatures
For these applications standardized pipe grades aregenerally to be used The appropriate pipe grades areshown in Table 26
2 Heat treatment
Pipes shall be properly heat treated as follows
a) Carbon steel carbon-manganese steel and03 Mo steel pipes
ndash normalized
b) Pipes made of 1 Cr 05 Mo and 225 Cr 1 Mo
steels
ndash quenched and tempered
Subsequent heat treatment need not be applied to hotformed pipes covered by a) if the hot forming opera-tion ensures a corresponding structure of sufficientuniformity Under these conditions tempering may besufficient for the alloy pipes covered by b)
Table 26 Standardized pipes made of high-temperature steel grades
Corresponding pipe grade toStrength category
or
pipe grade EN 10216-2 EN 10217-2 ISO 9329-2 ISO 9330-2
GLndashR 360 W P235GH P235GH PH 23 PH 23
GLndashR 410 W P265GH P265GH PH 26 PH 26
GLndashR 460 W ndashndash ndashndash PH 29 ndashndash
GLndashR 510 W 20MnNb6 ndashndash PH 35 PH 35
03Mo 16Mo3 16Mo3 16Mo3 16Mo3
1Cr05Mo 13CrMo4-5 ndashndash 13CrMo4-5 13CrMo4-5225Cr1Mo 10CrMo9-10 ndashndash 11CrMo9-10 11CrMo9-10
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash7
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 715
463 Non-destructive testing of fusion-weldedpipes
GL-R360 and GL-R410
The weld seam of SAW pipes of grades GL-R360and GL-R410 shall be tested either according toEN 10246-9 acceptance category U3 or EN 10246-10image quality class R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test in accordance with EN10246-9 acceptance category U3 or shall be examinedby means of radiographic testing according to EN10246-10 image quality class R2 or shall be cut off
GL-R490
The weld seam of pipes of grade GL-R490 shall betested over its entire length according to EN 10246-9acceptance category U2 or EN 10246-10 image qual-ity class R2
Areas of the weld seam in way of pipe ends whichhave not been tested automatically shall be subjectedeither to a manual or semi-automatic ultrasonic test orto radiographic testing as specified above or shall becut off
The base material is to be tested according to EN
10246-15 acceptance category U2The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end
Plate or strip edges adjacent to the weld seam are to betested within a 15 mm wide zone along the weld seam
in accordance with EN 10246-15 or EN 10246-16acceptance category U2 in each case
47 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
C High-Temperature Steel Pipes
1 Scope
These Rules are applicable to seamless and weldedpipes made of carbon steel carbon-manganese steelMo steel and Cr Mo steel and intended for steam boil-ers pressure vessels equipment and pipelines Pipesconforming to these Rules are intended for applicationat both ambient and elevated temperatures
For these applications standardized pipe grades aregenerally to be used The appropriate pipe grades areshown in Table 26
2 Heat treatment
Pipes shall be properly heat treated as follows
a) Carbon steel carbon-manganese steel and03 Mo steel pipes
ndash normalized
b) Pipes made of 1 Cr 05 Mo and 225 Cr 1 Mo
steels
ndash quenched and tempered
Subsequent heat treatment need not be applied to hotformed pipes covered by a) if the hot forming opera-tion ensures a corresponding structure of sufficientuniformity Under these conditions tempering may besufficient for the alloy pipes covered by b)
Table 26 Standardized pipes made of high-temperature steel grades
Corresponding pipe grade toStrength category
or
pipe grade EN 10216-2 EN 10217-2 ISO 9329-2 ISO 9330-2
GLndashR 360 W P235GH P235GH PH 23 PH 23
GLndashR 410 W P265GH P265GH PH 26 PH 26
GLndashR 460 W ndashndash ndashndash PH 29 ndashndash
GLndashR 510 W 20MnNb6 ndashndash PH 35 PH 35
03Mo 16Mo3 16Mo3 16Mo3 16Mo3
1Cr05Mo 13CrMo4-5 ndashndash 13CrMo4-5 13CrMo4-5225Cr1Mo 10CrMo9-10 ndashndash 11CrMo9-10 11CrMo9-10
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash7
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 815
3 Requirements applicable to the material
31 Chemical composition
The chemical composition shall conform to the data
given in Table 27 or where appropriate the relevantstandards or specifications
32 Mechanical properties
The required values of tensile strength yield strengthand elongation specified in Table 28 or where appro-priate in the relevant standards or specifications shallbe met under test at room temperature
33 Technological properties
When subjected to the ring tests the pipes shall dis-play a capacity for deformation which meets the re-quirements specified in A85
34 Impact energy
The pipes shall at least satisfy the impact energy re-quirements specified in Table 28
35 High-temperature characteristics
The 02 proof stress at elevated temperatures shallsatisfy the requirements specified in Table 29 or inthe other relevant standards or specifications
Table 27 Chemical compositions of high-temperature steel pipes
Chemical composition []Strength
category or
pipe grade C Simax Mn Pmax Smax Cr Mo Altot
GL-R 360 W le 016 035 le 120
GL-R 410 W le 020 040 le 140
GL-R 460 W le 022 040 le 140
GL-R 510 W le 023 055 080 ndash 150
le 030 le 008 ge 0020 1
03Mo 012 ndash 020 035 040 ndash 090 ndash 025 ndash 035
1Cr05Mo 010 ndash 017 035 040 ndash 070 070 ndash 115 040 ndash 060
225Cr1Mo 008 ndash 014 050 030 ndash 070
0025 0020
200 ndash 250 090 ndash 110
le 0040
1 This requirement does not apply if the steel contains a sufficient fraction of other nitrogen absorbing elements which is to be specified
If titanium is used the manufacturer shall demonstrate that
TiAl 0 20
2+ ge
⎛ ⎞⎜ ⎟⎝ ⎠
Table 28 Mechanical and technological properties of pipes made of high-temperature steel at room
temperature
Elongation
( ) o oat L = 565 S
A
[]
min
Impact energy
KV
[J]
min
Strengthcategory or
pipe grade
Tensilestrength
Rm
[Nmm2]
Yieldstrength
ReH
[Nmm2]
minlong transv long transv
GLndashR 360 W 360 ndash 500 235 25 23
GLndashR 410 W 410 ndash 570 255 21 19
GLndashR 460 W 460 ndash 580 270 23 21
GLndashR 510 W 510 ndash 650 355 19 17
03Mo 450 ndash 600 270 22 20
1Cr05Mo 440 ndash 590 290 22 20
225Cr1Mo 480 ndash 630 280 20 18
41 27
Chapter 2
Page 2ndash8
Section 2 Steel Pipes II - Part 1
GL 2009
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 915
Table 29 Minimum values of yield strength Rp02 at elevated temperatures
Steel gradeMinimum yield strength Rp02 [Nmm2]
at a temperature [degC] of
Materialcode
Materialnumber 100 150 200 250 300 350 400 450 500
GL-R360W 10345 198 187 170 150 132 120 112 108 ndash
GL-R410W 10425 226 213 192 171 154 141 134 128 ndash
GL-R460W ndash ndash ndash 235 215 175 155 145 135 ndash
GL-R510W 10471 312 292 264 241 219 200 186 174 ndash
03Mo 15415 243 237 224 205 173 159 156 150 146
1Cr05Mo 17335 264 253 245 236 192 182 174 168 166
225Cr1Mo 17380 249 241 234 224 219 212 207 193 180
36 Dimensional tolerances for collectors
Seamless collector pipes and collectors with inside
diameters le 600 mm are subject to the following di-mensional tolerances
ndash on the inner or outer clear width plusmn 10 where
the outer clear width is le 225 mm or plusmn 15 where the outer clear width is gt 225 mm
ndash 0 to + 25 on the wall thickness
ndash the lateral curvature of square pipes shall be asshown in Fig 21
b[mm]
up to100
101 to200
201 to300
301 andover
f
[mm]
075 10 15 20
f
r
bs
Fig 21 Tolerance on the lateral curvatureof square pipes
In square pipes the inner corner radius r in relation tothe wall thickness s shall be at least
sr 8 mm
3ge ge
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The manufacturer shall determine the chemical com-position of each heat in accordance with A81
42 Tensile test
Specimens of the sample pipes selected in accordancewith A82 shall be subjected to the tensile test
43 Technological test
431 The pipes namely two pipes of one testbatch shall undergo one of the ring tests specified inA Table 21 as follows
For fusion-welded pipes a weld seam bend test in
accordance with Part 3 ndash Welding Chapter 2 ndash De-sign Fabrication and Inspection of Welded JointsSection 5 D is to be carried out applying a bendingmandrel diameter of 3 t
432 To calculate the distance between the thrustplates in the ring flattening test the following valuesshall be assigned to the constant C in the formulagiven in A852
Pipes of strength categories 360 C = 009
Other pipe grades C = 007
44 Notched bar impact test
The test is to be carried out at room temperature on the
sample pipes selected in accordance with A82 using
transverse Charpy V-notch specimens if the outside
diameter is ge 200 mm If the outside diameter is lt 200
mm longitudinal specimens may be used
45 High-temperature tensile test
Where stipulated in A83 or in the purchase order the02 proof stress shall be determined by a high-temperature tensile test
46 Test of surface finish and dimensions
The tests specified in A86 are to be performed
II - Part 1
GL 2009
Section 2 Steel Pipes Chapter 2
Page 2ndash9
C
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1015
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test according to EN 10246 over theirwhole length and cross section cf A87
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
472 Non-destructive testing of fusion-welded
pipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested within
a 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
D Pipes Tough at Sub-Zero Temperatures
1 Scope
11 These Rules are applicable to seamless orwelded pipes made of carbon steel carbon-manganesesteel nickel alloy steel or austenitic steel tough at sub-zero temperatures and with wall thicknesses up to25 mm which are intended for the cargo and process-ing equipment of gas tankers with design temperaturesbelow 0 degC
For these applications suitable standardized steel grades may also be used provided that they meet the
requirements stated in these Rules including especially
those relating to impact energy at sub-zero tempera-tures For the appropriate pipe grades see Table 210
Table 210 Comparably suitable pipe grades of steels tough at sub-zero temperatures according to standard
Strength
category or
pipe grade
EN 10216-4 1
or
EN 10217-4 2
EN 10216-3 1
or
EN 10217-3 2
DIN 17458 1
or
DIN 17457 2
ISO 9329-3 1
or
ISO 9330-3 2
ISO 9329-4 1
or
ISO 9330-6 2
ASTM 3
A312M
GLndashR 360 TP215NLP255QL
PL25
GLndashR 390 T P265NLP275NL1
P275NL2
GLndashR 490 T P355NL1P355NL2
GLndashR 05 Ni 13MnNi6-3 13MnNi6-3
GLndashR 35 Ni 12Ni14 12Ni14
GLndashR 9 Ni X10Ni9 X10NiMn9
14306 X2CrNi19-11 X2CrNi1810 TP 304 L
14404 X2CrNiMo17-13-2 X2CrNiMo17-12 TP 316 L
14541 X6CrNiTi18-10 X6CrNiTi18-10 TP 321
14550 X6CrNiNb18-10 X6CrNiNb18-10 TP 347
14571 X6CrNiMoTi17-12-2 X6CrNiMoTi17-12
1 Seamless pipes
2 Welded pipes
3 The notched bar impact energies according to Table 214 are to be demonstrated
Chapter 2
Page 2ndash10
Section 2 Steel Pipes II - Part 1
GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1115
Note
In the case of pipes and connections which are in-
tended for liquefied ammonia at design temperaturesabove 0 degC the boundary values applicable to chemi-cal composition and strength properties as stated in
Section 1 F811 or 822 are to be maintained
12 Where the wall thickness of the pipes exceeds25 mm the requirements are subject to special agree-ment with GL
13 If the pipes are used for cargo and processequipment on gas tankers the minimum design tem-peratures specified in Table 211 are applicable
Table 211 Minimum design temperatures
Strength category
orpipe grade
Minimum design
temperature[deg C]
GL-R 360 T
GL-R 390 T
GL-R 490 T
ndash 55 1
GL-R 05 Ni
GL-R 35 Ni
ndash 55
ndash 90
GL-R 9 Ni ndash 165
Austenitic pipes ndash 165
1 Only applicable if the required impact energy has been
demonstrated at the time of the approval tests
2 Heat treatment
Depending on the material the pipes shall be suppliedin one of the heat treated conditions specified in Table212
Table 212 Heat treatment of steel pipes tough atsub-zero temperatures
Strength category
or pipe gradeType of heat treatment
GLndashR 360 TGLndashR 390 T
GLndashR 490 T
Normalized or quenchedand teampered
GLndashR 05 Ni Normalized
GLndashR 35 NiNormalized and tempered
or quenched and tempered
GLndashR 9 Ni
Double normalized and
tempered or quenched and
tempered
Seamless austenitic pipesSolution annealed and
quenched
Welded austenitic pipesSolution annealed and
quenched or in the welded
condition
For austenitic pipes the heat treatment may be fol-lowed by cold drawing entailing small degrees of deformation provided that the required characteristicscan be maintained
Welded austenitic pipes may be delivered in thewelded state without post-weld heat treatment pro-vided that a test of the procedure has demonstratedthat the characteristics of the material are satisfactoryand that the strips or plates used for their manufactureare solution annealed In addition any scale residualslag and temper colours on the inner and outer sur-faces shall be carefully removed eg by picklinggrinding or sand blasting
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to the data in Table 213 or where appropri-ate to the other relevant standards or specifications
32 Resistance of austenitic pipe grades tointercrystalline corrosion
Austenitic steel pipes shall be resistant to intercrystal-line corrosion Where welding is not followed byfurther heat treatment (quenching) only those pipegrades may be used which are corrosion-resistant inthe welded condition eg steels stabilized with Ti or
Nb or steels with carbon contents of C le 003 seeTable 213
33 Mechanical properties
The values for tensile strength yield strength or 02 or 1 proof stress and elongation specified in Table214 or where appropriate in the other relevant stan-dards or specifications shall be satisfied under test atroom temperature
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 Low-temperature impact energy
The required impact energy values specified in Table214 for the pipe grade concerned shall be met at theprescribed test temperatures This requirement is alsoapplicable to comparable pipe grades conforming tothe standards or specifications irrespective of thevalues specified therein
4 Testing and scope of tests
The following tests are to be performed
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash11
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1215
Table 213 Chemical composition of steel pipes tough at sub-zero temperatures
Chemical composition [] Strength
category or
pipe grade Cmax Si Mn Pmax Smax Cr Ni Mo Other elements
GLndashR 360 T 016 le 040 040 ndash 120
GLndashR 390 T 016 le 040 050 ndash 150
GLndashR 490 T 018 010 ndash 050 ge 090
0025 0020 le 030 le 03 le 008 Almet ge 0015 1 2
GLndashR 05 Ni 016 le 050 085 ndash 170 0025 0015 le 015 030 ndash 085 le 010 Almet ge 0015 1 3
GLndashR 35 Ni 015 0025 325 ndash 375 ndashndash
GLndashR 9 Ni 013015 ndash 035 030 ndash 085
00200010 ndashndash
850 ndash 950 le 010 V le 005
14306 0030 170 ndash 190 90 ndash 120 ndashndash
14404 0030 165 ndash 185 110 ndash 140 20 ndash 25ndashndash
14541 008 170 ndash 190 90 ndash 120 ndashndashTi ge 5 times C
le 070
14550 008 170 ndash 190 90 ndash 120 ndashndashNb ge 10 times C
le 100
14571 008
le 100 le 200 0040 0030
165 ndash 185 110 ndash 140 20 ndash 25Ti ge 5 times C
le 080
1 Al may be wholly or partly replaced by other fine grain elements2 Residual elements Cu le 020 total Cr + Cu + Mo le 045 3 Residual elements Nb le 005 Cu le 015 V le 005 total le 030
Table 214 Mechanical and technological properties of steel pipes tough at sub-zero temperatures
Elongation A
[]
min
Impact energyKV 2
[J]
minStrength category
or pipe grade
Tensile
strength
Rm
[Nmm2]
Yield strengthor proof stress
ReH or Rp02 Rp10
1
[Nmm2]
min long transvTest temperature
[degC]
long
[J]
transv
[J]
GLndashR 360 T 360 ndash 490 255 25 23
GLndashR 390 T 390 ndash 510 275 24 22
GLndashR 490 T 490 ndash 630 355 22 20
5 K below design
temperature
min ndash20 degC
GLndashR 05 Ni 490 ndash 610 355 22 20 ndash 60
GLndashR 35 Ni 440 ndash 620 345 22 20 ndash 95
GLndashR 9 Ni 690 ndash 840 510 20 18 ndash196
14306 480 ndash 680 215 40 35
14404 490 ndash 690 225 40 35
14541 510 ndash 710 235 35 30
14550 510 ndash 740 240 35 30
14571 510 ndash 710 245 35 30
ndash196
41(29) 27(19)
1 Rp02 or ReH applies to ferritic steels Rp10to austenitic steels
2 Average value of 3 specimens the values in brackets are the individual minima
Chapter 2Page 2ndash12
Section 2 Steel Pipes II - Part 1GL 2009
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1315
41 Test of chemical composition
The chemical composition of each heat shall be veri-fied by the pipe manufacturer or where appropriate inthe case of welded pipes by the manufacturer of thestarting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
421 The resistance to intercrystalline corrosionshall be tested on austenitic steel pipes where this iscalled for in the order or where the pipes are made of materials which do not meet the requirements in re-spect of the limited carbon content or sufficient stabi-lization with titanium or niobium see 32
422 The testing of resistance to intercrystallinecorrosion shall be performed in accordance with
ISO 3651-2 on at least two samples per heat The testspecimens shall be treated as follows
ndash Steels with C le 003 and stabilized steels areto undergo sensitizing heat treatment (700 degC30 min water quench)
ndash All other grades of steel shall be in the conditionin which they are supplied
43 Tensile test
The tensile test shall be performed on the sample pipesselected in accordance with A82
44 Technological tests
441 The pipes shall undergo one of the ring testsspecified in Table 21 For the performance of thetests specimens shall be taken from one end of twopipes of a test batch
442 To calculate the distance between the platensto be used in the ring flattening test the values accord-ing to Table 215 shall be assigned to the constant C inthe formula given in A852
Table 215
Strength category
or pipe grade
Constant
C
GLndashR 360 T 009GLndashR 390 T and
GLndashR 490 T
GLndashR 05 Ni
007
GLndashR 35 Ni 008
GLndashR 9 Ni 006
Austenitic pipes 010
45 Notched bar impact test
451 On pipes with wall thicknesses ge 6 mm thenotched bar impact test shall be performed on CharpyV-notch specimens taken from each sample pipe se-lected in accordance with A82
If the dimensions of the pipe are such that test speci-mens can be taken without straightening these shallbe taken transverse to the pipe axis In such cases anadditional (transverse) set of specimens shall be takenfrom fusion-welded pipes so that the notch is locatedin the middle of the weld metal
In all other cases the specimens shall be taken parallelto the pipe axis
452 If the wall thickness of the pipe does notallow the preparation of specimens with the stand-
ard dimensions (10 times 10 mm) specimens measuring
75 times 10 mm or 5 times 10 mm shall be used The re-quirements applicable to these specimens as comparedwith the standard specimens are shown in Table 216
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
Table 216 Impact energy for specimens of reduced size
Required impact energy KV with specimens measuring Required impact
energy 1 in Table 214
(standard specimens) 75 mm times 10 mm 5 mm times 10 mm
[J]
min
average value
[J]
min
minimum
individual value
[J]
average value
[J]
min
minimum
individual value
[J]
27 (19)
41 (29)
22
34
16
24
18
27
13
22
1 Average value of 3 specimens values in brackets apply to the min individual value
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash13
D
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1415
47 Non-destructive tests
All pipes shall be subjected by the manufacturer to anon-destructive test over their whole length accordingto EN 10246
471 Non-destructive testing of seamless andpressure-welded pipes
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according to EN10246-7 acceptance category U2 subcategory C orEN 10246-5 (only for ferromagnetic pipe grades)acceptance category F2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-7 acceptance category U2 subcategory C or shall becut off
472 Non-destructive testing of fusion-weldedpipes
The weld seam of the pipes shall be tested over itsentire length according to either EN 10246-9 accep-tance category U2 or EN 10246-10 image qualityclass R2
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test or shall be examined bymeans of radiographic testing according to the proce-dures specified above or shall be cut off
The base material is to be tested according to EN10246-15 acceptance category U2
The pipe ends have to be tested in accordance with EN10246-17 Laminations in circumferential direction of more than 6 mm length are not permitted within thelast 25 mm pipe length at each end Plate or stripedges adjacent to the weld seam are to be tested withina 15 mm wide zone along the weld seam in accor-dance with EN 10246-15 or EN 10246-16 acceptancecategory U2 in each case
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
E Stainless Steel Pipes
1 Scope
11 These Rules are applicable to seamless andwelded austenitic and austenitic-ferritic stainless steelpipes to be used for the cargo and processing equip-ment on chemical tankers and for other lines vesselsand equipment where chemical stability is requiredSuitable pipe grades conforming to international ornational standards and to established and recognizedspecifications together with the austenitic pipe grades
specified in D Table 213 are appropriate to theseapplications subject to the following conditions relat-ing to manufacture and testing
12 Pipe grades shall be so selected with regard
to subsequent manufacturing operations eg weldingthat they possess the chemical stability demanded bythe intended application
2 Heat treatment
The pipes shall be supplied in solution-annealed andquenched condition although welded pipes may alsobe supplied without post-weld heat treatment providedthat they continue to possess the required chemicalstability in this condition and that the conditions statedin D2 are complied with
3 Requirements applicable to the material
31 Chemical composition
The chemical composition of the pipe steels shallconform to recognized standards or specifications
32 Resistance to intercrystalline corrosion
In the condition in which they are supplied the pipesshall be resistant to intercrystalline corrosion
Where the welding is not to be followed by heat treat-
ment (solution annealing) only those pipe grades maybe used which are corrosion-resistant in the weldedcondition eg steels stabilized with Ti or Nb or steels
with carbon contents of C le 003
33 Mechanical properties
The required values of tensile strength 1 proof stress and elongation shall be satisfied in tests at roomtemperature in accordance with the standard or therecognized specification
34 Technological properties
In the ring tests the pipes shall exhibit a capacity fordeformation which satisfies the requirements stated inA85
35 High-temperature characteristics
Where pipes are used at elevated temperatures therequired values for the 02 or 1 proof stress pre-scribed in the relevant standards or recognized specifi-cations shall be met at the corresponding temperaturelevel
36 Impact energyThe required impact energy values shall be satisfied intests at room temperature in accordance with the rele-vant standard or the recognized specification
Chapter 2Page 2ndash14
Section 2 Steel Pipes II - Part 1GL 2009
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E
7222019 Abschn02 Steel Pipes
httpslidepdfcomreaderfullabschn02-steel-pipes 1515
4 Testing and scope of tests
The following tests are to be performed
41 Test of chemical composition
The chemical composition of each heat shall be dem-onstrated by the pipe manufacturer or where appro-priate in the case of welded pipes by the manufacturerof the starting material in accordance with A81
42 Test of resistance to intercrystalline corro-sion
Depending on the application and grade of the pipes atest of resistance to intercrystalline corrosion shall beperformed on the following pipes
ndash pipes for use on chemical tankers irrespective of the type of material
ndash pipes which do not meet the requirements inrespect of stabilization or limited carbon contentspecified in 32
ndash pipes made of stabilized steels or steels withlimited carbon contents intended for applica-tions not covered where such testing is speciallyprescribed in view of the anticipated corrosiveattack
The test conditions shall be as prescribed in D422
43 Tensile test
The tensile test shall be performed on specimens of the sample pipes selected in accordance with A82
44 Technological tests
Unless more extensive testing is prescribed in thestandards one of the ring tests specified in A Table21 shall be performed on one end of 2 of the pipesTo calculate the distance between the platens to beused in the ring flattening test a value of 010 shall beassigned to the constant C in the formula given inA852
45 High-temperature tensile test
Where called for in A83 or stipulated in the purchaseorder the 02 or 1 proof stress shall be deter-mined by a high-temperature tensile test
46 Test of surface finish and dimensions
Tests shall be performed in accordance with A86
47 Non-destructive tests
All pipes shall be subjected by the manufacturer tonon-destructive testing over their entire length accord-ing to EN 10246
The pipes shall be subjected to a non-destructive testin order to detect longitudinal defects according toEN 10246-7 acceptance category U2 subcategory C
Areas in way of pipe ends which have not been testedautomatically shall be subjected either to a manual orsemi-automatic ultrasonic test according to EN 10246-6 acceptance category U2 subcategory C or shall be
cut off
48 Tightness test
All pipes shall be tightness tested by the manufacturerin accordance with A88
II - Part 1GL 2009
Section 2 Steel Pipes Chapter 2Page 2ndash15
E