55705285-IS-6392

Indian Standard

IS :6392 -1971 (Reaffirmed 1008)

SPECIFICATION FOR STEEL PIPE FLANGES

Seventh Reprint MAY 1999 ( Incorporating Amendment No. 1)

UDC 621.643.412 [ 669.1.4 1

0 Copyright 1972

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAEAR MARG

NEW DELHI 110002

Gr 11 September 1972

IS : 6392 - 1971

Indian Standard SPECIFICATION FOR STEEL PIPE FLANGES

Steel T;bes, Pipes and Fittings Sectional Committee, SklIX 22

Chairman Reprrsentin~

,HRI J. G. KESWANX Indian Tube Co Ltd, Calcutta

Members

jHRIS. C. ANAND Uharat Steel Tubes Ltd, New Delhi SHRI K. C. SRIVASTAVA (Alltmafe)

~HRI E. ANANDA Rao Tube Products of India, Avadi, Madras SIIRI T. SIVASHANKAR ( Altcmafe )

jHRI D. K. rZROR.4 ~SSISTAF;T I)IRECTOR STANDARDS ( Loco ), LICKNOW

~HRI K. K. BANERJEE SHRI s. SRlNIVAsAN (.&7~~t~)

IHRI B. BEHERA SHRI G. DAS GUPTA ( Ahmtc)

~HRI B. H. CHAKRAVERTI SI$RI 4. K. SHOME i klernalr)

~xE~UTI\,E E:NCINELR, CENTRAL STORES DIVISION NO. 1

&RI PII. M. GHOSH SHRI B. K~MAR ( Alternafe )

~HRI C. P. GUPTA SHRI B. A. DEWI ( Afternote )

~HRI P. K. GUPTE

Jyoti Limited, Baroda Ministry of Railways

Hindustan Shipyard Ltd, Visakhapatnam .

Hindustan Stcrl Ltd, Rourkcla

Superintendrnce Co of India Private Ltd, Calcutta

Central Public Works Department, New Delhi

Stewarts 8~ Lloyds of India Ltd, Calcutta

Zenith St& Pipes Ltd, Khopoli

~HRI M. K. JAIN ~HRI J~con JOHN

National Metallurgical Laboratory ( CSIR ), Jamshedpur

Indian Oil Co Ltd, Bombay Kalinga Tubes Ltd, Calcutta

SHRI AJIT MOHAPATRA ( Alternate ) &RI M. T. KANSE Directorate General of Supplies & Disposals

( Inspection Wing ) SHRI S. G. KAPUR ( Alternntc)

LT-CDK V. N. MADHAV RAO Defcnce Xlcrallurgical Research I.&oratory [ Ministry ofDefenceiR&Djl

SI~RI P. S. ARAVINDAKSHAN ( Alternate ) SHRI P. MITRA Indian Tube Co Ltd. Jamshedpur SHRIGOPAI. J.PATEL Gujarat Steel Tubes Ltd. Ahmedabad

SHRI SHAILESH V. SHAH ( Alfcrrtnte ) SHRI N. R. ROYCHOWDHURY Burmah-Shell Rrfinrries I.td, Bomba)

SHRI S. L. ARANHA ( Altrrnote ) SHRI J. L. SETHI l’.W.D. ( Public Health Branch ), Governmrnt of

Hnrynn;~. C:h:mdigar h

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC

NEW DELHI 110002

18 : 6392 - 1971

( Continucdfiom pug8 1 )

hhmbers Represenfing

SHRI D. V. VADERA Central Boilers Board, New Delhi SE~RI R. K. SRIVASTAVA, Director General, IS1 ( Ex-ofi& Member )

Deputy Director ( Strut & Met ) Secretary

SHRI P. K. JAIN

Assistant Director ( Metals ), ISI

Panel for Steel Pipe Flanges and Steel Pipe Flanged Fittings, SMDC 22 : P 1 I

SHRI K. E. BISHOP

Members

SHRI K. S. BASU ( Alternate to Shri K. E. Bishop )

SHRI K. K. BANERJEE SHRI S. SRINIVASAN ( Alternate )

CHIEF CHEMICAL ENGINEER AND SAUZS MANAGER

SHRI VINODCHANDRA H. DOSHI SHRI H. H. JETHANANDANI SIIRI .I. P. JOSHI SHRI B. N. MAUSKAR

Stewarts & Lloyds of India Ltd, Calcutta

Hindustan Shipyard Ltd, Visakhapatnam

APV Engineering Co Ltd, Calcutta

SKRI Y. MITRA SHRI V. R. RAMA PRASAD

Echjay Industries Private Ltd, Bombay Fertilizer Corporation of India Ltd, Sindri ,W?lchandnagar Industries Ltd, P.O. Walchandnagar Republic Forge Co Ltd, Secunderabad Indian Tube Co Ltd, Jamshedpur

. Bharai Heavy Electricals Ltd, Tlruchirapalli SHRI M. K. RAGHUNATHAN ( Alternate )

REPRESENTATIVE John Thompson (I) Private Ltd, Calcutta SHRI K. SATYANARAYANA K. C. P. Ltd, Madras SHRI K. K. SEN Dewrance Macneill & Co Ltd, Calcutta SHRI D. G. TURNBULL ACC-Vickers-Babcock Limited, Durgapur SHRI D. V. VADERA Central Boilers Board, NW Delhi

IS : 6392 - 1971

Indian Standard SPECIFICATION FOR

STEEL PIPE FLANGES

0. FOREWORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on 29 October 1971, after the draft finalized by the Steel Tubes, Pipes and Fittings Sectional Committee had been approved by the Structural and Metals Division Council.

0.2 The ‘importance of piping i:lstallations in various industries has necessitated the preparation of this standard for the users and manufacturers of flanges and flanged fittings.

0.3 In the formulation of this standard due weightage has been given to international co-ordination among the standards prevailing in different countries in addition to rclatin 9 it to the practice in the field in this country. , Considerable assistance has been drawn from BS 4504 : 1969 ‘ Flanges and bolting for pipes, valves and fittings ’ issued by the British Standards Institution.

0.4 For the information of designers the high temperature properties of steels, whereves available, have been given in Appendix A. Values for other steels will be included when available.

0.5 This standard contains clauses 1.3, 5.2 and 7.1 which call for an agreement between the purchaser and the manufacturer.

0.6 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, exprcss- ing the resrrlt of a test or analysis, shall be rounded off in accordance with IS: 2-19tio*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard covers the requirements for cast, forged and plate or flat steel pipe flanges of the following types for use in industry for oil, water, steam, air, gas and chemical services:

a) Integral,

b) Welding neck,

*Rules for rounding off numerical valu,.s ( revised ).

3

IS : 6392 - 1971

c) Plate,

d) Screwed boss,

e) Slip-on boss,

f ) Loose flanges for welded-on lapped pipe ends, and

g) Blank.

1.2 This standard uoes not specify limitations on the use of various methods of attachment of flanges to pipe or other equipment. The adequacy for operating conditions of any method of attachment specified should be determined by the designer of the piping or equipment.

I.3 The types and materials of gaskets used shall he agrerd between the purchaser and the manufacturer.

NOTE 1 - The term ‘ plate flange’ indicates the shape of the flange ‘as the flanges are not necessarily made from steel plate hut may he made from forged or cast steel.

NOTE 2 - The term ‘ integral flange ’ applies to flanges integral with pipes, valves and fittings.

2. MATERIAL

2.1 The material\ shall be those given in Table 1 cxcc.pt that alternative materials may be uyed provided that their mechanical properties are not inferior at the operating temper-aturr.

2.2 Bolting Material-Both bolts and nuts shall be in accordance with IS : 1364-1967*. For alloy steel studs or bolts, nuts of a similar steel, but of a different qrade shall be used. If carbon steel is used, it shall have a tensile strength of 415 N/mm%, A4in ( 1 kgf = 9.81 N )~

2.2.1 For temperatures up to 45O”C, carbon steel bolts, studs and nuts may be used.

2.2.2 For temprratures higher than 450°C bolts and studs shall ,be of alloy steel and nutr shall be of carbon or alloy steel of different grade. For bolts less than 12 mm size alloy steel nuts shall be used.

2.3 Steel pipe flanges shall be supplied according to IS : 1387-1967T and + all threaded fasteners according to IS : 1367-1967$.

3. CLASSIFICATION

3.1 This standard applies to Sarlges of the following class designations:

Classes O-1, 0.25, 0.60, l.0, 1.6, 2.5, 4.0, 6.4, 10.0 and 16.0.

*Specification for precision and semi-precision hexagon bolts, screws, nuts and lock nuts ( dia range 6 to 39 mm ) (J;nr revision ).

tGencra1 requirements for the supply of metallurgical materials (jrst revision ). :Technical supply conditions for threaded fasteners (Jirst r~~kion ).

4

IS : 6392 - 1971

TABLE 1 MATERIAL SPECIFICATION

IE. 9

ii)

iii)

iv)

v)

vi)

vii)

(ckWsc2.1 )

CLASSlPICAT~OFd

a) Forgings

Carbon steel

Carbon molybdrnum atccl

Chrome-molybdenum steel

1) 1 percent chromium-O.5 percent molybdenum steel

2) 2.25 percent chromium - 1 percent molybdenum steel

b) Costingr

Carbon steel

Chrome-molybdenum steel

1) Carbon molybdenum steel 2) 2.25 percent chromium

molybdenum steel - 0.5 percent

3) 225 percent chromium-l percent mol)& dcnum steel

c) Rolled Plates

Carbon atccl

Carbon molybdenum steel

SPECll’ICATION

IS : 2004.1970+, Classcs 2 and 3

IS: 1570-196lt, Grade 20 MO g with @050, Max, of S and P

IS : 261 l-1964$

IS : ;3;0&67’, Grade 10 r

IS : 2856-196411, Grades CSW- C20 and CSW-C25

IS : 3038-19659, Grade 2 IS : 3038-19659, Grade 4

IS : 3038-196571, Grade 5

IS : 2002-1962**, Grades 1 and 2A

IS:2041-1962tt, Grade 20 MoZ

‘Specification for carbon steel forgings for general engineering purposes ( first r&ion ). tSchedules for wrought steels for general engineering purnoses. ( Since revised and

issued in parts ). $Sprrification for carbon chromium molybdenum steel forgings for high temperature

scwic c. $Speciticntion for alloy and tool steel forgings for general industrial use. IlSperification for carbon stw! casting- suitablr for high trnlperature service ( fusion

welding quality ). ( Since revised ).

l/Speciticariotr for alloy steel castings for pressure containing parts suitable for high lcr~~pcr’dt~rc scrvire. ( Since revised ).

**Specikation for Ttrrl platrs for boilers. ttSpccification for steel pi.11~5 for pressure vessels.

3.2 Pressure Temperature Ratings - The &ss designations represent tire primary servkc pre~\rk~c rxtings rJf the flanges in newtons/millimetre square.

5

IS2 6392 - 1971

3.2.1 The allowable stress values for the different materials given in Table 1 shall be determined by dividing the appropriate properties of the mtiterial by the‘ factors given in the table below and taking the lowest value.

3.2.2 Pressure ratings at different temper:rtures for ‘flan:qes made E-om different types of steel mentioned in Table 1 may Ix arrived at by the formula given below:

Pressure ratings at primary service Gmperature, II Pressure ratings at any other temperature, ‘rS

Allowable stress value at primary service temperaturt-, T, - Allowable stress value at any temperature, 7,

3.2.3 Other properties are given below:

Carbon and Carbon Matzganese Steele

1.5

3.0

1

Low Alloy Steels

1.5

3.0

1

Proper9

Certified or specified minimum yield ( or 0.2 percent proof) stress at design temperature

Specified minimum tensile stress at room temperature

Average stress to produce rupture in 10000 hours at design ternperaturc

NCITE 1 ---In the case of castings, the above factors shall be divided by a qu&y factor of 0.75. However, a quality factor of 0.9 shall be used when the following requirements have been met with:

a) Each casting has been radiographically examined at all critical locations and found free from harmful defects, or the castings have been fully machined to such an extent that all critical sections arc exposed for the full thickness as in the case 6f tube plats with holes spaced not further apart than the thickness of the casting..

b) All castings have been examined at a11 critical localions using magnetic particle, or pcnetrant fluid procedure ( see IS : 3658-19OG* and IS: 370%196Gt ) or by grinding or machining and etching. L

c) Castings found tobc dcfcctivc have been njccted or repaired to the satisfaction ofthc inspecting authority. If repairs by welding arc carried out, the castings shou!d be subsequently stress-relieved or heat-treated 3s agrpcd between the st:cl-maker and the inspecting authority, Repair areas of castings should bc rc- examsned in accordance with 3.2.3 (a) and should be shown to bc free ~from harmful defects. In all other cases a factor of 0.75 shall be used instead ofO.90.

NOTE 2 - The minimum tensile strength yield strength at room tcmpcraturc have been specified in the relevant specifications.

NOTE 3 -For high temperature properties, see Appendix A.

*Code of practice for liquid pcnclrant flaw detection. t&de or practice for magnetic particle flaw dckection.

6

IS : 6392 - 1971

4. DESIGNATION

4.1 The flanges shall be designated by the nominal bores of their respective pipes as shown in column 1 of Tables 2 to 42. In addition to the nominal bore size the rated pressure, type, grade and standard number of the material for flange should also be given to completely specify the flange.

5. FLANGES

5.1 Dimensions - The dimensions of various types of flanges for different pressure classes conforming to this standard shall be as given in Tables 2 to 42.

5.2 Machining of Flanges - ?‘he backs of integral flanges shall be machined except that the backs of integral forged flanges need not be machined provided they are parallel with the whole face within 1 deg. Where machining is carried out it may be either by spot facing at the bolt holes or by back facing at the option of the manufacturer.

5.2.1 The backs of other flanges may be left unmachincd unless machining is required by the purchaser.

5.2.2 Unless othcrwGsc specified by the purchaser all bolt holes shall be drilled, equally spaced on the pitch circle diameter. In the case of i,ntegral Ilangcs the bolt holes shall be drilled off centres.

6. TOLERANCES

6.1 Tolerances on flange diameter, thickness and length of welding necks shall be as follows:

6.1.1 Outside Diameter D

Up to 200 nun inclusive

Over 200 mm to 300 mm inclusive

Over 300 mm lo 400 mm inclusive

Over 400 mm

6.1.2 Thickness b

Machined Unmachined

f 1 mm f2mm

f 1.5 mm &2mm

& 2 mm -&3mm

*2mm f5mm

6.1.2.1 Flanges integral with valves and fittings (other than forged steel ) :

7

IS : 6392 - 1971

Thickness Machined .Not Machined at ____A_.___~ at Back Back

Over Up to and In- mm &ding mm

- 10 + 1.5 + !Er -0 -0

10 20 -t 2.0 + 3.5 -0 -0

20 30 + 2.5 + 4.5 -0 -0

30 50 + 3.0 + 6.5 -0 -0

50 70 + 4.0 + 8.5 -0 -0

70 100 + 5.0 + 10.5 -0 -0

100 -. + 7.0 + 14.5 -0 -0

6.1.2.2 Flanges not integral with valves and fittings:

Thickness Machined Not Machined at at Back Back

Up to 35 mm inclusive + 1.5 t-3 -0 -0

Over 35 mm +3 +5 -- 0 --- 0

6.1.2.3 Forged steel flanges integral with valves and fittings:

Thickness Machined Not Machined at at Back Back

Up to 35 mm inclusive + 1.5 +3 -0 -0

Over 35 mm thick -t 3 i- 3 L -0 -0

6.1.3 Length of Welding Neck Range ( h, ) -- shall be as given below:

Machined

Up to 80 mm nominal size inclusive f 1.5 mm Over 80 to 250 mm nominal size inclusive k2 mm Over 250 mm nominal size f 3 mm

6.2 Finish of Joint Surfaces -The finish ofjoint faces a.nd 11x type of gasket to he used are not specified in this standard due to the ITide rangy

8

IS : 75392 - 1971

of applidations for which the flanges can be used. However, the recom- mended joint face finish to be provid-ed on flanges used for steam, feed, water, and other fluids for which similar standards of joint tightness are required is as follows:

a) Flanges Up to 300 mm Nominal Size Inclusive-A continuous spiral ,groove produced by a I.5 mm radius round-nosed tool at a feed of approximately 0.8 mm per revolution.

b) Flanges Over 300 mm .Nominal Size- A continuous spiral groove produced by a 3 mm radius round-nosed tool at a feed of approximately 1.2 mm per revolution.

6.3 Joint Faces y Steel flanges shall have raised joint faces except that blank flanges may be flat faced or have a spigot at the option of the manufacturer.

7. ATTACHMENT OF FLANG-ES

7.1 The method of securing flanges ( other than the integral flanges ) to pipes and fittings shall be in accordance with the appropriate application standard. Where there is no application standard the method of attachment shall be the subject of agreement between the purchaser and the manufacturer.

7.2 Flanges machined according to the tolerances in 6 shall be prepared for attachment to pipe as in 7.2.1 to 7.2.3.

7.2.1 Screwed Flanges - These shall Abe screwed as agreed to between the contracting parties.

7.2.2 Steel Plate and Steel Slip-On Boss Flanges - These shall be machined in the bore to a diameter to be specified by the purchaser and suitable for welding to form one of the types in the appropriate application standard as required by the purchaser. The purchaser shall specify the weld preparatio? required.

7.2.3 Welding Neck Flanges-These shall be machined in the bore to a diameter to be specified by the purchaser, and suitably prepared for welding to pipes and fittings. The thickness of the portion of the flange which connects it to the pipe should be not less than the pipe thickness nor more than 3 mm thicker. If the difference is more than 3 mm, it may be ncgotiatcd in a slope of 1 in 5.

B. HYDRAULIC TESTING OF FLANGES

B.l This standard does not specify the hydraulic test pressures for flanged pipes or components, details which should be obtained from the appropriate standards wl,ich specify test pressures for pipes or components but the test l>i‘cssure ::pplied to the joint shall not exccerl I.5 times the nominal pressure for the flanges.

9

IS : 6392 - 1971

9. INSPECTION

9.1 The purchaser or his representative shall have free access at all reasonable times to those parts of the manufacturer’s works actually engag- ed upon his contract and shall be at liberty to inspect at any stage of manufacture the materials covered by such contract. He shall be at liberty to reject any material which does not comply with the requirements of this

.standard.

9.1.1 When the purchaser or his representative desires to witness the specified tests on the materials covered by his contract, the manufacturer shall notify him sufficiently in advance of the tests to enable him to be present.

9.2 Defects which do not impair the strength of the flanges may be welded by a procedure approved by the purchaser. They shall be cleaned out to sound metal before welding, and shall be submitted to the purchaser’s inspector for approval in this condition, after which they may be welded if the purchaser so agrees. After welding, flanges shall be heat-treated, except that welds required for finish- and appearances only need ‘not be heat treated, if approved by the purchaser. When the welding of defects is permitted, the welding rod shall be such as to produce a weld having characteristics similar to the parent metal.

10. DETAILS TO BE SUPPLIED BY THE PURCHASER WHEN ORDERING FLANGES

10.1 The following information shall be supplied by the purchaser when placing an order or making an enquiry:

4 Nominal size, nominal pressure, type of flange (including type of screwing whether taper or parallel ) ( see Tables 2 to 42 ) and materials ( see Table 1 ) ;

b) Whether test certificates of the material are required;

c) Details of bolting ( if required ) ( see 2.2 );

4 Whether flanges are to be machined (see 5.2 and 5.2.1 ); and

e) Details of the machining for the attachment of flanges ( see 7 ).

11. MARKING L

11.1 Flanges manufactured in accordance with this specification shall be marked as in 11.1.1 to 11.2.

11 .l .l Manufacturer’s name or trade-mark.

11 .1.2 Class Rating - Numerals giving the primary service pressure for ‘which the product is designated.

11.1.3 Muferials Idenf$xfion - Carbon steel flanges shall be marked with the word ‘ Steel ‘. designated in Table 1.

Alloy steel flanges shall be marked with the symbols

10

IS : 6392 - 1971

11 J.4 Thread Identification - The marking shall be cast or stamped on the flanges to indicate the type of thread used. For details reference may be made to IS : 1367-1967*.

11.1.5 Size - Numerals denoting the nominal pipe size in mm size markings but may be omitted from reducing flanges.

11.1.6 Omission of Markirlgs - On flanges of such’ size or shape as will not permit of full markings, those may be omitted with the approval of the purchaser keeping the minimum the markings as under:

a) Size, b) Materials specification, c) Class rating, and d) Manufacturer’s name or trade-mar.k.

The remaining information should be made available to the purchaser, if required.

11.2 Flanges conforming to this standard may also be marked with the 1,$1 Certification Mark.

NOTE -The use of the ISI Certification Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks )-Act and the Rules and Regulations made thereunder. The ISI Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements , of that standard under-a well-defined system of inspection, testing and qualit which is devised and supervised by ISI and operated Ly the producer.

control

continuousl IS{ marked

products are also further safeguard. Details P

checked by IS1 for conformity to that stand& as a o conditions under which a licence for the use of the ISI

Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

12. PRESERVATION AND PACKING

12.1 After inspection, and before despatch, flanges shall, if necessary, be dried and cleaned.

12.1.1 Threaded and machined surfaces shall be well-covered with an approved rust preventive material that will not become fluid and run off at 65°C.

12.1.2 Exposed faces of flanges shall be protected over their entire surface with a suitable close-fitting protector securely attached at not less than four points. The type of protector and method of attachment shall be approved by the purchaser.

12.2 Pactillg 12.2.1 Flrr,nges shall be bundled by bolting them together or securing

them with wire of suitable strength passed through the bolt holes in such a manner that the flanges are paired and no flange facings remain exposed.

12.2.2 Other methods of preparation for despatch shall be subject to agreement between the purchaser and the manufacturer.

*Technical supply conditions for threaded fasteners (first rcui&r ).

11

Is : 6392 : 1971

TABLE 2 WELDING NECK FLANGES

( claI4.ws 4.1 and 5.1 )

Nominal pressure W25 N/mm’J.

All dimensions in millimetres.

NOTE - For nominal sizes 10 to 1 000 mm, use Table 4.

*These dimensions are not to scale.

NOM SUE

1 200 1 220 1 375

1 400 1420 1 575

1 600 1 620 1’790

1 800 1820 1990

2 000 2 020 2 190

PIPE 1 FLANGE o. d.

dl --

D

-

.C

b 4 --

26 70

26 70

26 80

26 80

26 80

-

1 F RAISED FAC

-

E I BOLT- I DRILLING NECK ING

No. --

M27 32

M27 36

M27 40

M27 44

M27 48

-

4 -

30

30

30

30

30

-

-

_-

1

1

1

k

-

320

520

730

1 930

2 130

4 h2 =

1 245 16

I 445 16

1 645 20

1 845 20

2 045 22

, b.

16

16

16

16

16

12

IS : 6392 - 1971

TABLE 3 PLATE FLANGES FOR WELDING

( Clauses 4.1 and 5.1 )

Nominal pressure 0.25 N/mm2.

All dimensions in millimctrrs.

NOTE - For nominal sizes 10 to 1 000 mm, use Tat !r 5


NOM PIPE FLANGE I

RAISED FACE SIZE o. d.

4 D

--~

1 200 1 220 1 375

1 400 I 420 1 575

1 600 1 620 1 790

1 800 1 820 1 990

2 000 2 020 2 190

--

b 4 --

36 1 280

42 1 480

46 1 690

52 1 890

50 2 a90 1

-

I _-

BOLT- I)RILLIXG ING

No. 4 ----

M27 32 30

M27 36 30

M27 40 30

M27 44 30

ML;

k

-~.

1 320

1 520

1 730

1 930

2 130

13

TABLE 4 WELDING NECK FLANGES . . 09

( Cln~cses A. 1 crw’ 3.1 ) ii I

‘\I1 dimensions in miliimctres.


c

IS : 6392 - 1971



Nominal pressure 0.60 N/mm?.


i\;OM

SIZE

10 15 20 2.5 32 40 50 65 80

100 125 150 ‘00 ‘50 3rio 370 400 500 600 iO0 :XJO

900

1 000 1 200 1 400 I 600 1 800 2 000

PIPE 0. cl.

d!

li ‘I 21.3 26.9 33.7 42.4 48.3 6C.3 76.1 88.9

114.3 139.7 16;‘,.3 216.1 273 323.9 357.6 4&,.-i X8 GUY6 ill.2 812.8 914.4 1016 1 220 1 420 1 62.0 1 11211 2 020

T- FLAN(:E

ii 90

100 120 130 140 160 190 210 240 265 320 375 -I 10 490 540 645 755 860 975

1 07.5 1 175 1 405 1 1130 1 830 2 04.5 2265

b

12 12 14 14 16 16 16 16 18 18

:?I 22 24 24 26 28

z: 34 38 42 46 56 66 74 :v 92

35 40 50 60 70 80 90

110 120 148 178 202 258 312 361 415 465 5iO 670 775 880 980

1 080 1 295 1510 1710 1 920 2 125

-

.-

F

T JOLT. ING

3110 Ml0 Ml0 hfl0 Ml2 Ml2 Ml2 Ml2 Ml6 Ml6 hI16 Ml6 RI16 hllG M20 M20 A120 M20 IL124 M24 M27 M27 h127 M30 M33 hI33 hr3r: b’I”Y i I .

T .-

NO.

4 4 4 4 4 4

:: 4 4 8 8 8

12 12 12

:: 20 24

;t 28 32 3G 40 4 4 48

11 11 11 11 1-I 14 14 14 18 18 18 18

1: 22 22 22

z: 26 30

_;;

33 36 36 39 42

k

5c 5 _ 62 7:’ 9s

100 110 130 150 170 200 225 280 335 + 39.5 441 495 coo 705 810 920

1 020 1 120 1 340 1 560 1 760 1 970 2 180

1’

IS : 6392 - 1971

TABLE 6 SCREWED BOSS FLANGES




NOM SIZE

6 8

:: 20

25

:: 50 65

1:: 125 150

PIPE o. d.

dl

10.2 13.5 17.2 21.3 26.9

-

I D

65

::

f X 33.7 100 42.4 120 48.3 130 60.3 140 76.1 160

88.9 190 114.3 210 159.7 240 165.1 265

FLANGE

b h

tt 12 12 14

18 18

z: 24

14 14 14

t:

1G 16

34 128 40 148. 44 178 44 202

.-

1

-

RAISED FACE

(14

25

z 40 50

.f

_-

I1 3OLT-

ING

-

I

Ml0 Ml0 Ml0 Ml@ Ml0

Ml0 -? Ml2 4 hi12 4 Ml2 4 Ml2 4

MlG Ml6 Ml6 Ml6

4

% 8

.-

DRILLING

NO.

-

.- 4 k

11

ii !l 11

18

:‘5 30 40

11 14

:: 14

;z 100 110 130

50 60

;: 100

18 150 110 18 170 130 13 200 160 18 225 185

-

I -_

Boss d3

17

P

IS : 6392 - 1971

TABLE 7 SLIP-ON BOSS FLANGES FOR WELDING

( Cfauw 4.1 amd 5.1 )

Nominal pressure O-60 N/mm*.


6 8

10

:;

25 32 40

z:

80 100 125 150 200

250 300

Pm3 o. d.

c9- P

IO.2 13.5 17.2 21.3 26-9

33.7 42.4 48.3 60.3 76.1

88.9 114.3 139.7 1683 219.1

100 120 130 140 160

190 210 240 265 320

375 440

RMSED FACE

4

25 30

z 50

60

z

1:

128 168 178 202 258

312 365

BOLT- 1 DRILUMO

Ml0 4 Ml0 Ml0 t Ml0 Ml0 t

MI0 4 Ml2 4 Ml2 4 Ml2 4 Ml2 4

Ml6 ’ 4 Ml6 Ml6 : Ml6 Ml6 :

Kft6 M20 :;

11 40 II 45 11 50

f: :z

11 14 G

14 14 E FQ I30

18 150 18 170 18 200 I8 223 18 280

:z 335 395

18

IS : 6392 - 1971

TABLE 8 LOOSE FLANGES FOR WELDED ON LAPPED PIPE ENDS

(cfulI.rcr 4.1 and 5.1 )

Nominal pressure O-60 N/mm*.


-I- r r -

I -

NOM SIZE

FLANGE DRILLING PIPE END PIPE o. d. 4

17.2 21.3 26-9 33.7 42.4 48.3 60.3 76.1 88.9

114.3 139.7 168.3 219-l 273

‘323.9 355.6 419 508 609.6 711.2 812.8 91414

I 016 1 220

BOLT- ING -

6 da Ma.%

2 50 60 70 80

1:: 128 148 178 202 258 312 365 415 465 570 67a 775 88C 98C

1 08C 1 29:

-

r

4 D c No. 4 k

El 1z 120

E 160 190 210

% 320 375 440

490 540 645 755 860 975

I 075 I 175 L 405

:: IO 12 12

f:

if 14

:9 18

z:

26 30 32 36 40 44 48

2:

if:

E 46

z’5 81

1:: 145 174 225 279 330

362 426 516 618 720 822 926

1 02e 1 232

Ml0 Ml0 Ml0 Ml0 Ml2 Ml2 Ml2 Ml2 Ml6 Ml6 Ml6 Ml6 Ml6 Ml6 M20 M20 M20 M20 M24 M24 M27 M27 M27 M30

4

t

t 4

t 4 4 8

: 12 12

12

::

is

::: 28 32

:: 11

:: 14

:t

::

:!I 18

:; 22

;; 26 36

:I: 30 33

2: 65

zz 100 110 130 150 170

200 225

3

:

4

4 5 5

3 5

:

z

6

f

f 6

E 8

335 395 445 495 600 705 810

920 I 020 I 120 I 340

19

TABLE 9 PLATE BLANK FLANGES c . .

( ClUUS?S 4.1 and 5.1 )

Seminal prc~ure 0.60 K/mm’. 3 S

.A11 dimensions in millimetres. I -KCJTE - The tlvo t! pt-s of flanges shown are .~ltcrnativrs at the option of the manufacturer. 5

pq-dz G’J bl 2

FOPM A

LO+------4

FobM B -

-I-

FLASCE

I) b

is 80 90

100 120 130 140 160 190 210 240 265 2% 320 3i5

440 490 5-10 I- I -.

-- I:! 1 L’ l! I! l-1 14 14 14 IG !F 18 18 20 20 22

G 22 nl

-

I --

SPIGOT

4

- - -_

-

5 5 70 90

115 140 165 190 237 285 332 380

BOLTING DRILLING

Ml0 Ml0 Ml0 Ml0 Ml2 A112 Ml2 Ml2 Ml6 MIC MlG Ml6 MIG Ml6 Ml6 M20 .M20 M20

-

--

-

_- 1.

zs 65

:o” 100 110 130 150 170 200 225 255 280 335 395 445 495

c

IS : 6392 - 1971

TABLE 10 WELDING NECK FLANGES ( Clauses 4.1 and5.1 )

Nominal pressure 1 N/mm*. 411 dimensions in millimetres.

NOTE - For nominal sizes 10 to 175 mm, use Table 16.

*These dimensions arc not to scale.

JOM

iIZr.

200 250 Y)O 3iO 400

500 600 7 0’) 80:: 900

0:io 280 ‘100 tioo 800

000

PIPI?. o.d. (11

219.1 273 323.9 3.j?‘(‘, 406.4

508 ti09.1; 711.2 *;12.8 914.4

01,; 2’0 420 620 820

020

-

FLANGE

n --

340 : 3!li 4li .,u:i .3x

670 730 89 .Y)

101-l 1 1 1 .-I 1 231) 1 4.53 1 675 191-l 2 115

2 3Li

I

-

R

_

_

:AISED FACI

'14

268 320 370 430 192

5fii c,U.! 301) 90.-J

1 001)

1110 1 330 1 53.5 1 76il 1 9tio

2 170

-

f -

-

1 1

--

SOLT- ING

-

I

hI20 M’O M20 ?.420 SI:! ! 342 I M27 1127 1130 M30

M33 h43ti h139 M4.i M45

M4 ‘:

NECK

21

IS : 6392 - 1971


( Clnusrs 4.1 nad 5.1 )

Nominal pressure 1 N/mm2.


NOTE -For nominal sizes 10 to 175 mm, use Table 17.

*These iiimensions are not to scale.

NOM SIZE

PIPE o. d.

d,

219.1 273 323.9 355.8 406.4

T FLANGE

D

_-

200 250 300 350 400

340 395 445 505 565

500 508 670 600 609.f.j 780 700 711.2 895 800 812.8 1015 900 914.4 1115

1 000 016 1 230 1 200 220 1 455

-

I RAISEU FACE

268 320 370 430 482

585 685 800 905

1 005

1110 1 330

f

T --

BOLT- ING

-

I No.

M20 M20 M20 M20 M24

M24 M27 M27 hi30 M30

M33 28 M36 32

hILLIN‘

k

295 350 400% 460 515

620 725 840 950

1 050

1 t60 1 380

22

lS x 6992 - 1971

TABLE 12 SLIP-ON BOSS FLANGES FOR WELDING ( Chue~ 4.1 and 5.1 )

Nominal pressure 1 N/mm*.

All dimckonr in millimetres.

N--Far nominal sires 6 to 65 mm inchkvc, UK Tab!e 19.

TAPER 1 IN 6.25 ON DIAMETER

NOM

SIZE PIPS o. d. dr *

-

I n

80 88-9 200

100 114.3 220

J25 i39-7 250

150 168.3 285

200 219-l 340

250 273

300 323.9

395

445

~20

20

22

22

24

b A

34

40

44

44

44

FLANGS

4

138

158

188

212

268

26 46 320

26 46 370

I

BOLT- hILLlNG

ING

NO.

MIG 8

Ml6 8

i

Ml6 8

MM 8

M20 8

M20 12

M20 12

18 160 118

18 180 140

18 210 f68

22 240 195

22 295 237

22

22

350

400

292

344

t

Boss d,

23

IS : 6392 - 1971

TABLE 13 LOOSE FLANGES FOR WELDED-ON LAPPED PIPE ENDS


Nominal pressure 1 N/mm:!.

All dimensions in millimctres.

NOM SIZE

-

_-

PIPE o. d.

dl D

10

:z 23 32

17.2 21.3 26.9 33.7 42.4

E 105 115 140

40 50

:; 100

48.3 150 60.3 165 76-l 185 88.9 200

114.3 220

125 139.7 250 150 168.3 285 200 219.1 340 250 273 395 300 323.9 445

FLANGE

52 65 81 94

119

145 174 225 279 330

c?

--

BOLT- ING

Ml2 Ml2 Ml2 Ml2 Ml6

Ml6 Ml6 Ml6 Ml6 Ml6

Ml6 M20 M20 M20 M20

NO. -i-

_- 4

14 14

;: 18

4 18 4 18

: :: 8 18

DRILLING

-

- L

-

I PIPE END k d4

MOX

40 45

:: 78

110 125 145 160 180

1:: 122 138 158

210 188 240 212 295 268 350 320 400 370

24

TABLE 14 PLATE BLANK FLANGES


Nominal prrssurc 1 N/mmj.

All dimensions in millimctrcs.

SOTE 1 - The t\vo types of flanges shown arc alternatives at the option of the manufacturer.

NOTE 2 - For nominal sizes 10 to 175 mm, USC Table 20.

PPROX

FORM A FORM 8

NOM SIZE

FLANGK SPIGOT BOLTIn-G DRILLING

ds

D b NO. dz k

IS:6392-1971

TABLE ,15 INTEGRAL FLANGES


Nominal pressure 1.6 N/mms.



NOM SIZE

5: 100 125 150

175 200 250 300 350

400 500 600 700 800

900 1000 1200 1400 1600 1800 2 000 2 200

T FLANGE I RAISED FACE

D .-.

185 200 220 250 285 315 340 405 460 520 580 715 840 910

1025 1 125 1255 1485 1 685 1 930 2 130 2 345 2 555

-

_-

-

b

-ii-- 20

;: 22

:% 26 28 30

32

:x

z

tz 52 58 64 68 70 74

d4

122 138 158 188 212 242 268 320 378 438

490 610 725 795 9;oo

1 000 1115 1 330 1 530 1 750 1 950 2 150 2 360

f

- BOLT-

ING

Ml6 Ml6 Ml6 Ml6 M20

M20 M20 M24 M24 M24 M27 M30 M33 M33 M36

M36 M39 M45 M45 M52 M52 M56 M56

-i-

No.

DRILLING -

dz _ k

145 93 160 110 180 130 210 159 240 184 270 211 295 236 355 290 410 342 470 396

525 448 650 554 770 660 840 760 950 864

1 050 966 1 170 1070 1 390 1278 1 590 1 488 1 820 1 696

2 020 1902 2 230 2 106 2 440 2 312

-

_ NECK

r

5 2 6 6

f

t 8 *

10 10

:4 12 12 12

:z 18 18

;:

26

TABLE l6 WELDING NECK FLANGES


Nominal pressure I.6 N/mma.



NOM SIZE

17.2 21.3 26.9 33.7 42.4

48.3 60.3 76.1 88.9

114.3

125 139.7 150 168.3 175 193.7 200 219.1 250 273

300

zz 500 600

323.9 460 355.6 520 406.4 580 508 715 609.6 840

700 800 900

1 000 L 200

1 400 1 600 1 800 2 000

711.2 910 812.8 1 025 914.4 1 125

1016 1 255 1220 1 485

1 420 1 685 1 620 1 930 1820 2 130 2 020 2 345

-

_-

PIPE o. d.

dl

FLANGE

D

iii 105 115 140

150 165 185 200 220

250 285 315 340 405

hl 4

E 38 38 40

42 45 45

::

78 82 85

::

100 105 110 120 130

145 160 170 180

RAISED FACE

t i 58 68 78

88 102 122 138 158

188 212 242 268 320

378 438 490 6 10 725

795 900

1 000 1115 1 330

1 530 1 750 1 950 2 I.50

BOLT- ING

Ml2 Ml2 Ml2 Ml2 Ml6

Ml6 Ml6 Ml6 Ml6 Ml6

Ml6 M20 M20 M20 M24

M24 M24 M27 M30 M33

M33 M36 M36\ M39 M45

M45 M52 M52 M56

-

I No.

5::

58 32

36 40

1;:

DRILLING

k 4

60 65

:z 100

28

z:, 45 56

110 125 145 160 180

64

;z 105 131

210 156 240 184 270 210 295 235 355 292

410 344 470 390 525 445 650 548 770 652

:: 16 16 18

840 755 950 855

1 050 955 1 170 1 058 1 390 1 262

18

:: 22 30

1 590 1 4G5 30 1 820 1 668 35 2 020 1 270 35 2230 2 072 40

NECK

As in the Original Standard, this Page is Intentionally Left Blank

1d:6392 -1971

TABLE 17 PLATE FLANGES FOR WELDING ( Clallses 4.1 ond 5.1 )

Nominal pressure 1.6 N/mmz.

Ail dimensions in millimetres.


NOM SIZE

:i 20

:z 40

2:

1::

125 150 175 200 250 300 350 400 500 600

700 800 900

1 000 -1 200

PIPE o. d.

dl

17.2 21.3 26.9 33.7 42.4 48.3 60.3 76.1 88.9

114.3 139.7 168.3 193.7 21911 273 323.9 355.6 .406.4 508 609.6

711.2 812.8 914.4

1016 1 220

FLANGE RAISED FACE

D b 4 f No.

is 105 115 140 150 165 185 200 220 250 285 315 340 405

460 520 580 715 840

910 1 025 1 125 1 255 1 485

40 45 58 68 78

1:; 122 138 158 188 212 242 268 320 378 438 490 610 725

795 900

1 000 1115 1 330

-

BOLT- ING

Ml2 Ml2 Ml2 Ml2 Ml6 Ml6 Ml6 Ml6 Ml6 Ml6 Ml6 M20 M20 M20 M24 M24 M24 M27 M30 M33 M33 M36- M36 M39 M45

-

I DRILLING

k

60

7”,”

1:: 110 125 145 160 180

210 240 270 295 355

410 470 525 650 770 840 950

-1050 1 170 1 390

29

IS : 6392 - 1971


(Clauses 4.1 and 5.1 )

Nominal pressure 1 and 1.6 N/mm?.

.411 dimensions in millimetres.

t-- d, +-----+_I

TAPER 1 IN 6.25 ON DIAMETER

-

/

-

I -

I I)RILLISG

-

I -

Boss 4

A

50 5.5 GO 65 7.5

20 25 30 +. 35 45

85 52 100 GO 110 70 125 85 145 105

160 1RO 210 240

1 I-8 140 lG8 195

-

_

NOM SIZE

PIPE

o. d. dl z=z

FLANGE R.AISED FACE BOL.T-

ING

XI10

hIi

&I12 Ml2 Ml2

hl12 MlG Ml6 MlG Ml6

Ml6 Ml6 hflG

%I20

D I1

_ .

__

-

-- f dz b

10.2 75 12 13.5 80 12 17.2 90 14 21.3 95 14 26.9 10.3 1G

33.7 11.5 1G 42.4 140. 16 48.3 150 16 60.3 lG5 18 76.1 185 18

80 88.9 200 100 114.3 220 125 139.7 250 150 165.1 28.5

20

:: 22

so.

8

: 8

G 8

18 18

;i 24

:: 58

G8 78

1:: 122

34 138 40 158 44 188 44 212

11

:: 14 14

14 18

1: 18

18 18

30

IS I 6392 - 1971

TABLE 19 SLIP-ON BOSS FLANGES FOR WELDING

( Chuicr 4.1 and 5.~1 )

Nominal pressure 1.6 N/mm’. All dimensions in millimctres.

Norr - Use this table also for nominal sizes 6 to 65 mm for 1.0 N/mm2 nominal pressure.

-,_++I

Now SlZE

PIPE o. d.

dt S

10.2 I3..5 17.2 21.3 26-3

[! n . i 42.4 48.3 CO.3 76.1

1% 130-7 168.3 419.1

273 323.9

-

I .-

I)

75

t k! l”oZ

115 140 150 165 185

200 220 2 w 285 340

405 460

FLANGE

b

-

I i- I1

12 18 12 18 14 20 14 20 16 24

45 58

16 16 16 1u 18

;: “6 28 32

G8 7P,

1:; 122

;: 22 22 24

ZJ

f :: 44

130 158 188 212 268

26 46 320 28 46 378

MI0 MI0 h112 h412 Ml2

hllG Mlci Ml6 h12O M20

M24 M24

DNLLINO

I __

No. dz k

--

4

: 4 4

II SO 20 II 55 25 14 60 30 14 65 35 14 75 45

14 In

t: 18

1% 110 125 145

18

z 22 22

1: 210 240 295

355 410

d:,

118 140 168 195 247

TABiE 20 PLATE BLANK FLANGES ( CkUUSCJ 4~1 d 5.1 )

Nominal pressure 1.6 K/nml*. 51 . .

All dimensions in millimetres. a Norm -- The two types of Ranges shown arc alternatives at the option of the manufacture:. ;g

-

I- w r.l

FORM A FORM B

FL.tNGE

n

90 95 IO3 115 140 150 165 185 200 L” 0 250 285 315 340 405

460 520 580 715

t

b

28 30 32 36

- SPIGOT

4

- - - - - -

55 2

115 140 165 190 237

285 332 380 475

BOLTING

Ml2 Ml2 Ml2 h112 Ml6

Ml6 Ml6 Ml6 h116 MlG Ml6 h<20 h120 M2Q M24 hl24 M24 M27 M30

No. 4

DRILLING

14 14 14 14 18

:t

:: 18

::

f: 26

Xt

;s

60 65

:: 100 110 125 145 160 180

210

E 295 355 410 470 525 650

IS : 6392 - 1971

TABLE 21 INTEGRAL FLANGES

( Clawes 4.1 and 5.1 )

Nominal pressure 2.5 N/mms.


NOTE - For nominal sizes 10 to 150 mm, use. Table 26.

-

I DRILLING NOM SIZE

FLANGE RAISED FACE BOLT- IP;G

M24 M24 M27 M27 M30 M33 M33 M36 M39 M45

M45 M52 M52 M56 M56

M64 M64

NECK

No. 4 r

iii

ii 10 10

:; 12 15

:; 18 18 20 20 20

-

-

._

-

_ b 4 f k 4 D

175 330 200 360 250 425 300 485 350 555

400 620 500 730 600 845 700 960 800 1 085

900 1 185 1 000 1 320 1 200 1 550 1 400 1 755 1 qoo 1 975

1 800 2 195 2 000 2 425

28 30

;: 38

4: 46 50 54

2:

:: 84

248 278 335 395 450 505 615 720 820 930

1 030 1 140 1 350 1 560 1 780 1 985 2 210

3

; 4 4 4 4 5 5 5

z

; 5 5 5

i; 12 16 16 16

;: 24 24

:: 32 36 40

1:

280 217 310 246 370 298 430 352 490 408 550 460 660 566 770 670 875 990

,Z76 882

1 090 988 1210 1 094 1 420 1 306 1 640 1514 1 860 1 726 2 070 1 936 2 300 2 144

c

33

IS : 6392 - 1971


( ClaUses 4.1 and 5.1 )

Xominal pressure 2.5 N/mm”.


XOTE - For nomir.al sizes 10 to 150 mm, use Table 27.

a 0 +* f’l‘hrsr d~mcnsions are nor to scale.

YOM

SIZE

PIPE

0. d. I.’ i

193.7 21’1.1 273 323.9 :< -3 .rl (

I'l6.J

.j(ii?

W!)~(

ii 1.2 :? I ?.I?

-

I -

--

Fr ANIC.IZ

- -

b

- _

28 ‘10 32 34 38

RAISED

-

J ._ -

z 3 4 4.

4 4

z 5

5 5

L

BOLT-

ING

M24 hi24 M27 M27 h130

12 12

;z 1G

2ri 26 30

z,”

280 310 370 430 490

4

2 18 244 298 352 398

M33 h133 M36 M39 1145

36 ZiO 452 36 660 558 38 770 660 42 875 760 48 990 865

hf45 28 48 1 090 968 M52 28 56 1210 1 070

DRILLING

--

l ---

40.

--

-

4

-

k 32 r;:

15 16 18

:;

20 20 20 20 21

21 24

r

10 10 12

L

12 12

12

I

i;

1 L’ 16

34

IS : 6392 - 1971





NOTE - For nominal sizes 10 to 150 mm, useTable 28.

*Tl~rse tlimcnsim~ arc not to scale.

Nov SIZE

I 7 5

200

2.50

300

350

400

500

600

19Y.T

219.1

273

323.9

355.6

330

360

425

485

555

620

730

8.1.5

-

.- b

26

28

32

38

42

46

58

66

d,

248

278

335

395

450

-

.-

35

M24

M24

M27

M27

M30

M33

hi33

1136

-

.-

I

DRILLING

No. dz

12 26

12 26

12 30

16 30

16 33

16 36

20 36

20 39

-_ k

-_

280

310

370 c

430

490

550

660

7io

ls : 6392 - 1971

TABLE 24 SLIP-ON BOSS FLANGES FOR WELDING (Chw4.1 and 5.1 )

Nominal pressure 25 N/mm’. All dimensions in millimetrcr.

NOSS SIZE

PIPE o. d. dx TJ

-

1 D’

10.2 13.5 17.2 21.3 26.9

ii 90 95

105

33.7 115 42.4 140 48.3 150 60.3 165 76.1 185

1% 125 150 200

88.9 200 114.3 235 139-7 270 168.3 300 219.1 360

250 273 425 300 323.9 485

II

ii 40 45 58

68 78

*:; 122

40 138 44 162 48 188 52 218 52 278

60 335 67 395

RAISID FACB

.f

T- I 3oI.T. IN0

Ml0 Ml0 Ml2 Ml2 Ml2

Ml2 Ml6 Ml6 Ml6 Ml6

Ml6 M20 M24 M24 M24

M27 M27

DWLLING

No.

f 4

z

:: 4

8’

:

s 12

12 16

da

ii 14 14 14

so

i?i 65 75

14 18 18 18 18

1: 110 125 145

52

18 22

;f 26

160 118 190 145 220 170 250 200 310 256

30 370 310 30 430 364

k

36

TABLE 25 PLATE BUNK FLANGES

( clawU 4.1 end 5.1 )

Nominal pressure 2.5 N/mm*. AU dimensions in millimctres.

NOTE 1 - The two types of flanges shmn are alternatives at the option of the manufacturer.

NOTE 2 - For nominal sizes 10 to 150 mm, use Table 31.

NOM .kZC FL&W32

175

% 300 350

400 500

D

330

1% 485 555

620 730

b

28 30 32 I

jio+“--i j LZ APPROX

FORM B

165

::

3;: 380 475

BOLTING r M24 M24 M27 M27 M3O

M33 M33

NO.

f4 :: 16

DUXLUNG

2: E 33

36 36

k

290 310 370

z

550 660

TABLE 26 INTEGRAL FLANGE6

( Clauses 4.1 4nd5.1 )


/\I1 dimensions iri millimetrcs.

NOTE - This table shall also bc used in ease of following sizes and pressures :

Nominal Size Pressure size mm N/mm’

10 to 50 10 ), 150 ;:“5 80 1, 150 2.5

NOM SIZE

:: 105 115 140

40

65:

1::

150 165 185 200 235

*% 125 270 150 300 175 350 200 375 250 450

300 350 400 500

515 42 410 580 46 465 660 50 535 755 52 615 890 60 735

700 995 800 1 140 900 1 250

1 000 1 360 1200 1 575

64 72 76

s:

840 960

1 070 1 180 1 380

1 400 1 795 98 1 600 1 600 2 025 108 1815

-

1 D b

FLANGE

-

I RAISED FACE

88 102 122 138 162

188 218 260 285 345

-

_- f

:

: 2

3 3

z 3

3

3” 3 3

t 4 4 5

z

2 5

5 5

-

I _-

BOLTING DRILLING

Ml2 Ml2 Ml2 Ml2 Ml6

Ml6 Ml6 Ml6 Ml6 M20

M24 M24 M27 M27 M30

i 12 12 12

M30 M33 M36 M39 M45

16 16

:i 20

M45 M52 M52 M52 M56

M56 36 M64 40

_- 6 4

f: iP 75 44 85 53

100 60

110 125 145 160 190

E

1;: 136

220 165 250 192 295 223 320 252 385 308

450 364 510 420 585 476 670 578 795 690

900 796 1 030 908 1 140 1014 1 250 1 120 1 460 1 332

1 680 1 548 1900 1 762

NECK

t

lS:6392-1971 *


( Clauses 4.1 and5.1 ) Nominal pressure 4.0 N/mmz. .411 dimensions in millimetres.

No% - Also for nominal sizes 10 to 150 mm and 2.5 N/mm% nominal pressure, USC this table.

LThese dimensions are not to scale.

17.2 21.3

zz:; 42.4

%: 76.1 88.9

114.3

139.7 168.3 193.7 219.1 273

323.9 355.6 406.4 508

FLANQE

D -

90

1% 115 140

:z! 185 200 235

270 300 350 375 450

515 580 660 755

Q -

ii 40

ZI

45 48 52 58 65

68

:; 88

105

115 125 135 140

RAISED

4 -

40 45

g 78

1: 122 138 162

188 218 260 285 345

410 465 535 615

a

7 -

z 2

;

3

z 3’ 3

3

! 3

t 4 4

)OL~NG

Ml2 Ml2 Ml2 Ml2 Ml6

Ml6 Ml6 Ml6 Ml6 M20

M24 M24 M27 M27 M30

M30 M33

ZE

4

t

t

4

: 8 8

t

:z 12

16 16

;:

4 -

tt

:t 18

:t 18

::

26 26 30 30 33

33

g 42

-i- -

iii 75

113

110 125 145 160 190

220 250 295 320 385

450 510

%

-

28

z 46 56

64

z 105 134

162 192 218 244 306

z; 462 562

1s : 6392 - 1971

TABLE 28 PLATE FLANGES FOR WELDSNC

( chzuses 4.1 and 5.1 )

Nominal pressure 4.0 N/mm*. All dimensions in millimetres.

NOTS - Aho for nominal S~ZW 10 to 150 mm and 2-5 N/en& pressure, use this t&k.

m% 0. cl.

4

139.7 168.3 193.7 219.1 273

323.9 355.6 406.4 508

._

D

96 95

405 115 140

150 165 185

z

270

:: 375 450

515 580 660 755

dr f

i!i 2i 78

*z 122 138 162

188 218

z 345

410 465 535 615

Ml2 Ml2 Ml2 Ml2 Ml6

Ml6 Ml6 Ml6 Ml6 M20

M24 M24 M27 M27 M30

M30 M33 M36 M39

k

220

;g 320 385

450 510 585 670

+

IS I 6392 - 1971


(Clauses4.1 oad5.1 )

Nominal pressure 2.5 and 4.0 N/mm2.


-

I PIPE o. d.

4 S

FLANGE RAISED FACE DRILLING I NOM SIZE

30LTING Boss ds .-

4

32

E 45 58

68 78 88

102 122

138

-

I_

k

85 100 110 125 145

160 118 190 145 220 170 250 200

b h

-

--

-

-_ No. 4

11 11 14 14 14

14 18 18

f:

18

$2 26

D

.-

f 10

2

10.2 75 13-5 80 17.2 90 21.3 95 26.9 105

33.7 115 42.4 140 48.3 150 60.3 165 76.1 185

80 88.9 zoo -100 114.3 235 125 139.7 270 150 165.1 300

14 14

:: 18

18

1: 20 22

$4 26 28

Ml0 Ml0 Ml2 Ml2 Ml2

Ml2 Ml6 Ml6 Ml6 Ml6

Ml6 M20 M24 M24

42

IS : 6392 - 1971

TABLE 30 SLIP-ON BOSS FLANGES -FOR WELDING

( Cluwes 4.1 and 5.1 )



TAPER 1 IN 6.25 ON OIAME TER

1\10M

SIZE

5 10

:;

25 32 40 50 65

80 100 125 150 200

250 300

PIPE CI. d. dl I

10.2 13.5 17.2 21.3 26.9

33.7 42.4 48.3 60.3 76.1

88.9 114’3 139.7 168.3 219’1

273 323’9

-

I D b h

2 :i

105

115 140 150 165 185

200 235 270 300 375

450 515

FLANGE

-

I 1

14

:: 16 18

18 18 18

z

:: 26 28 32

40 48

RAISED FACE

4 f __

32

:: ;

45 z 58 2

68

z : 3

102 3 122 3

138 162 ; 188 3 218 3 285 3

345 3 410 4

-

: I! I 10~~1~0

Ml0 Ml0 Ml2 Ml2 Ml2

Ml2 Ml6 Ml6 Ml6 Ml6

Ml6 M20 M24 M24 M27

M30 M30

-

I No.

t 4 4 4

$ 4

:

t 8

1:

:z

DRILLING

-

.- 4x k

11 11

:: 14

::

:: 18

18

2226 26 30

zz

ii

f i 75

85 100 110 125 145

160 190

% 320

385 450

-

I1 Boss 4

85 105

118 145 170 200 260

320 380

43

TABLE 31 PLATE BUdK FLANGES . ( Ch.rcs 4.1 and 5.1 )

Nominal pressure +O N/mm%. All dimensions in millimctrcs.

NOTE 1 - The two types of flanges shown are alternatives at the option of the manufacturer. NOTE 2 - Also for nominal sizes 10 to 150 mm and 2.5 N/mms nominal pressure, use this table.

IT b

Nou SIZE

:z 20

100

125 150 175 200 250

300 350 400 500

l------o++ FORM A FORM B

I D

FLANGE

ii 105 115 140.

150 165 185 200 235

270 300 350 375 450

515 580 660 755

b

24 24

8PIOOT

do

- - - - - -

i-i

;: 115 140 165 190 237

285 332 380 475

BOLTINO DRXLLINO

Ml2 Ml2 Ml2 Ml2 Ml6

Ml6 Ml6 Ml6 Ml6 M20

M24 M24 M27 M27 M30

M30 M33 M36 M39

No.

t

a 4

4

B”

s

: 12

16

:6” 20

--

-

-_ A

6650 75

1:

110 125 145 160 190

220 250 295 320 385

450 510 585 670

c

IS I 6392 - 1971

TABLE 32 INTEGRAL PUNGES ( c&lueJ 4.1 aad 5.1 )

Nominal pressure 6.4 N/mm*. All dimensions in millimetres.

NOTE-For nominal sizes 10 to 40 mm, use Table 40.

NOM LZE

-

I

1: 1:: 125 150 175 200 250 300 350 400 500 600 700 800 900

1 000 1 200

FLANGE

D

180 205

;:z 295 345 375 415 470 530 600 670 800 930 045 165 285 415 665

-

1 RAISED FACE i

102 122 138 162 188

218 260 285 345 410 465 535 615 735 840 960 070 180 380

f

I

_-

3

&lLT- ING

M20 M20 M20 M24 M27 M30 M30 M33 M33 M33 M36 M39 M45 M52 MS2 M56 M56 M64 M72

DRILLING

No. 6

22

z: 26 30

3”:

E 36

E! 48 56 56 62

;: 78

-

.- k da

135 160 170 200 240 280 310 345 400 460 525 585 705 820 935

1 050 1 170 1 290 1 530

NE&

1:: 122 146 171

204 235 264 320 378 434 490 602 714 826 938

1 048 1 162 1 390

r

L

45

lb : bY92 - 1971







BOLT. ING

PIPE o. d.

d,

-

I - -

-I -

I FLANGE NOM SIZE

RAISED FACE

DRILLING

-

D

-

b

-

zi 28 30 34

36

:: 46 52

No.

-

4

-

d_

<_

_

L

4 -

102 122 138 162 188

1:: 110 125 140

218 260 285 345 410

150 465 160 535

f k &

50

z 100 125

60.3 180 76.1 205 88.9 215

114.3 250 139.7 295

150 168.3 345 175 193.7 375 200 219.1 415 250 273 470 300 323.9 530

350 355.6 600 400 406.4 670

M20 M20 M20 M24 M27

M30 M30 M33 M33 M33

M36 M39

135 160 170 200 240

280 310 345 400 460

525 585

9”: 112 138 168

202 228 256 316 372

420 475

4s

IS:6392-1971


(%iauses 4.1 and 5.1 )

Nominal pressure 6-4 N/mms.


NOTE-For nominal sizes 10 to 40 mm, use Table 38.


NOM SIZE

PIPE o. d.

dl

---I- 50 60.3 65 76.1

1:: 88.9

114.3 125 139.7

150 168.3 175 193.7 200 219.1 250 273 300 323.9

350

I

355.8 400 -1-06.4

-

I FLANGE RAISED FACE

D

180 205 215 250 295

345 375 415 470 530

600 G70

-

_-

A

-

b d4

26 26

;; 34

102 122 138 162 188

36 218 40 260 46 285 54 345 62 410

72 465 78 535

-

.- f

3 3 3 3 3

3

;

:

4 4

i- BOLT- DRILLING

IYG --

No. --

M20 4 M20 8 M20 8 M24 M27 !

M30 M30 1; M33 12 M33 12 M33 16

M36 16 39 525 M39 16 42 585

-

_- d, k

22 135 22 160 22 170 26 200 30 240

33

:: 36 36

280 310 345 400 460

47

IS : 6392-1971


( Clarrses 4.1 and 5.1 )

Nominal pressure 6.4 N/mmz.



FOR SEAL WELDING IF NECESSARV

TAPER 1 IN 6.25 DN DIAMETER

50

:; 100 125

150

z D b h da f No. d2 k d2 /I r

_----- --- --

60.3 180 26 36 102 3” M20 76.1 205 26 40 122 M20 :z 135 90 160 112 7 3” 7 88.9 2.15 28 44 138

114.3 250 30 52 162 3” M20 22 170 125 7 M24 26 200 152 7 :

i 7 3

48

IS:6392-1971

TABLE 36 INTBGRAL FLANGES

( Cfouses 4.1 and 5.1 )

Nominal pressure 10 N/mm%.


NOTE -For nominal sizes .I0 to 100 mm, use Table 40.

NOM I FLANGE SIZE

D

125 315 150 355 175 385 200 430 250 505

300 585 350 655 400 715 500 870 600 990

700 1 145

b

40 44 48

2:

68 74

;: 104

120

RAISED FACE BOLTINQ

188 218 260 285 345

410 465 535 615 735

840

-

-L---- 1

M30 M30

: M30 M33

3 M36

: M39 M45

t M45 M52

4 M56

4 M64

-

I

--

DRILLING

No. do

-

._ k

--

._

.-

250 185 290 216 320 247 360 278 430 340

16 42 16 48

:: 5: 20 62

500 402 560 460 620 ~518 760 630 875 740

24 70 1 020 860

-

I NECK -

_ I

49

IS s 6392 - 1971



Nominal pressure 10 N/mm2.


NOTE -Also for nominal sizes 10 to 40 mm and 6.4 N/mms nominal pressure, use this table.


NOM SIZE

fFJ ;: 32 40

5: 80

100

125 150 175 200 250

300 350

PIPE o.d. dl

Ii.2 21.3 26.9 33.7 42.4

48.3 60.3 76.1 88.9

114.3

139.7 lG8.3 193.7

%?’

323.9 355.6

-

I r 30LTIi-4~ J- DRILLING -

I -

--

FLANGE RAISED FACE

NECK

T 4 b

20 2220 ;: 2286 3”: 36

40 44 48 52 60

68 74

- - 4 I 2 42

5:

z:: 108 120 150

180 210 745 278 340

400 160

-_

-_

- -

-_

-_

--

f No. d2 k

-

5 i 8

:: 12

;:

12 12 16 16 18

:o”

r

--

4 14 4 14 4 18 4 18 4 22

4 22 4 26 8 26 8 26 8 30

89+ 33 12 33

33 :; 36 12 39

16 42 16 48

_ -

I

d_ __ 100 105 130 140 155

170 195 220 230 265

315 355 385 430 505

585 655

45

4:

6”:

I: 76

9’0”

105 115 127 130 157

170 189

40

z 68 78

1:: 122 138 162

183 218 260 285 345

410 465

Ml2 Ml2 Ml6 Ml6 M20

M20 M24 M24 M24 M27

M30 M30 M30 M33 M36

M39 M45

::

1:: 110

125 145 170 180 210

250 290 320 360 430

500 560

4 4

: 6

6” +

6

:

1:

:: 12

12 12 -

50

IS : 6392 - 1971



Nominal pressure 10 N/mm2. All dimensions in millimetres.

NOTE - Also for nominal sizes 10 to 40 mm and 6.4 N/mm2 nominal pressure, use this table.


NOM SIZE

:: 20 25 32

125 150 175 200 250

300 350 400 500

PIPE o. d.

dl

17.2 21.3 26.9 33.7 42.4

48.3 60.3 76.1 88.9

114.3

139.7 168.3 193.7 219.1 273

223.9 355.6 406.4 508

FLANGE

100 105 130 140 155

170 195 220 230 265

315 355 385 430 505

585 655 715 870

b

20 20

:: 24

:: 30 34 36

42 48

z;: 72

84 95

106 128

RAISEDFACE

4

40 45 58 68 78

88 102 122 138 lC2

188 218 260 285 345

410 465 5 3.5 6 I 5

J

2 2

z

3

: 3 3

3 3 3

:

:: 4 4

BOLT- INO

--

Ml2 Ml2 Ml6 Ml6 M20

M20 M24 M24 M24 M27

M30 M30 M30 M33 M36

M39 M45 M45 M52

DRILLING

8

::

:;

16 16

k

70 75 90

100 110

125 145 170 180 210

250 290 320 360 430

500 569 620 760

51

IS : 6392 - 1971



Pjominal pressure 10 N/mm2.


FOR SEAL WELOlNf IF NECESSARY

NOM SIZE

PIPE I FLANGE

17.2 100 21.3 105 26.9 130 33.7 140 42.4 155

48.3 170 GO.3 195 76.1 220 88.9 230

114.3 265

139.7 315 165.1 355

b

-

I RAISED FACE

-

h 4 -

28 40 28 45

z: ;: 32 78

1:: 122 138 162

188 218

-

f

-

:I BOLT- ING

-

I --

Ml2 Ml2 Ml6 Ml6 M20

M20 M24 M24 M24 M27

M30 M30

DRILLING

-

No.

-

__

- -

4 -r

-

k ds -

70 7.5 90

100 110

125

:“;; 180 210

80 95

118 130 158

250 290

188 225

P

-

I

-

2 : +.

:

3

z 3 3

3 3

-

52

IS : 6392 - 1971

TABLE 40 INTEGRAL FLANGES


Nominal pressure 16’0 N/mms. All dimensions in millimetres.

NOTE - This table shall also be used in this ease of following sizes and pressures:

flominal Size .Ah&k7l Pressure mm N/mm2

10 to 40 6-4 to 10.0 50 to 100 10’0

NOM SIZE

FLANGE _

n

10 100 15 105 20 130 25 140 32 1.55

40 50 65 a0

100

125 150 175 200 250

300

170 195 220 230 265

315 355 390 430 515

585

T; .-

b 4

20 20

;: 26

E 58 68 78

28

33: 36 40

88 102 122 138 162

44 188 50 218 54 260 60 285 68 345

78 410

&AISED FACE T- -

-

-- f

2

;

z

3

: 3 3

3

z 3 3

4

BOLT- XNG

Ml2 Ml2 Ml6 Ml6 M20

M20 M24 M24 M24 M27

M30 M30 M33 M33 M39

M39

53

-i- DRILLING i

No. dz

14 14 18

::

22 26

z 30

-

.- k

2 1:: 110

125 145 170 180 210

250 290 320 360 430

500

4 .-

NECK

40 45 50 61 68

:: ii8 128 150

184 224 250 288 346

414

:

4 4 4

4 4 5

2

6

: a a

10

IS:6392 -1971

TABLE 41 WELDING NECK FLANGES ( Clauses 4.1 and 5.1 )

Nominal pressure 16.0 Njmm2.


*These dimensions are not to scale. -

I Y--

-

I -

I -

NOM SIZE

PIPE o. d.

dx

FLANGE <ABED FACE

4 f

DRILLING NECK I BOLT- ING

vo. k

. _ -.-

Ml2 Ml2 Ml6 Ml6 M20

14 14 18

:;

70 32 6 75 34 G 90 42 8

100 52 8 110 55 8

M2O M24 M24 M24 M27

22 125 26 145 26 170 26 180 30 210

:: 108 120 150

M30 M30 M33 M33 M39

8 12 12

:5

33

z: 36 42

250 180 290 210 320 245 360 278 430 340

M39 16 42 5oc 400

D b

-_

10 1.5

;z 32

17.2 100 21.3 105 26.9 130 33.7 140 42.4 155

20

ix 24 26

40

;: 80

100

48.3 170 GO.3 195 76.1 220 88.9 230

114.3 265

125 139.7 315 150 168,3 355 175 193.7 390 200 219.1 430 250 273 515

500 323.9 585

28 30 34 36 40

44 50 54 60 68

78

-

--

hl

45 45

:II 60

64 7.5 82 a6

100

115 128 138 140 155

175

-

-

_-

BS

hz zs

10 10 12

:;

14 14 16 16 18

18

40 45 58 68 78

88 102 122 138 162

188 218 260 285 345

410

:

2’ 2

3 3

: 3

3 3 3 3 3

4

54

IS 8 6392 - 1971

TABLE 42 PLATE FLANGES FGR WELDING

( clouse~ 4.1 and 5.1)

Nominal pressure 16-O N/mms.



NOM SIZE

10

:; 25 32

40

z:

1%

125 150 175 200 250

300

PIPE o. d.

dr

17-2 21.3 26.9 33.7 42.4

48.3 60.3 76.1 88.9

114.3

139.7 168.3 193,7 219.1 273

323.9

-

I I_

I

FLANGE RAISED FACE

D

100 105 130 140 155

1io 195 220 230 265

315 355 390 430 515

585

-

b 4 -- ‘7

2224 I 4o 45 26 26 z: 28 1 78

30 : 88 102

! 122 zz 40 44

138 162

188 218 260 285 345

106 410

f

;

2 2

: 3 3 3

3

; 3 3

4

-

I 1

,-

1 30LnNc

- -

1 DRILLING

--

No.

Ml2 Ml2 Ml6 Ml6 M20

4 4

t 4

M20 M24 M24 M24 M27

M30 M30 M33 M33 M39

M39 16

k

:“5 l”o”o 110

125 145 170 180 210

250 290 320 360 430

500

55

I8:6392-1971

APPENDIX A

( Clauses 0.4 and 3.2.3 )

A-l. HIGH TEMPERATURE PROPERTIES OF STEELS

A-l.1 The minimum yield stress or O-2 percent proof stress values and the average stress for rupture in 100 000 hours at different temperatures for some of the steels included in Table 1 are given in Tables 43, 44 and 45.

56

TABLE 43 MINIMUM YIELD STRESS ( R,, ) OR 0.2 PERCENT PROOF STRESS ( R, 0.2 ) AT ELEVATED TEMPERATURES

( Clnuse A-l .l ) .

IS/GRADE TREATMENT THICKNESS Ret Miff, R, @2 Min IN N/mm* AT TEMPERATURE ‘C mm r---__---_--____-_ --_--_---_----y

100 I.30 200 250 300 350 400 450 500 550 600

iS : 2002-1962 ti <1G 205.0 187.4 168.9 146.0 127.5 116.7 110.8 106.9 - - - Grade I >lG <40 197.2 185.4 165.7 14G.O 127.5 116.7 110.8 106.9 - - -

)40 <63 179’5 172.7 160*8 14G.O 127.5 llc*7 110.8 106.9 - - -

- - - UI IS : 2002-1962 N <I6 211.9 208.0 208.0 180.5 151.1 142.0 139.1 136.4 ti Grade 2x >I6 <‘IO 201.1 199.1 192.3 172.7 151.1 142.0 139.1 136.4 - - -

>40 <63 191.3 18q.3 190.5 167’8 151.1 142.0 139.1 136.4 - - - >63 <I@0 178.5 18Ca.j 170.7 lG1.8 151.1 142.0 139.1 136.4 - - -

TS : 261 I-19G4 N+T 210.9 200.1 190.3 181.5 153.0 136.4 132.4 128.5 125.6 122.6 118.7 Qi-T 338.2 320.7 315.9 303.1 293.3 284.5 280.8 273.7 263.8 251.1 239.1

IS : 4367-1967 N-f-T 259.9 2.52.1 244.1 235.2 229.5 223.7 216.8 204.0 188.4 167.7 143.4 Ioc!-21Llol QkT 318.8 311.0 303.1 294.3 28ti.4 280.6 270.7 257.0 236.2 207.0 176.6 6

N = normalizing, ;;, w

T = tempering, and s Q = quenching. I

s s

s TABLE 44 CREEP RUPTURE PROPERTIES FOR PLATES . .

( Clause A-l.1 ) z %

IS/GRADE TREATMENT ESTIMATED AVERAGE STRESS (N/mm?) FOR RUPTURE IN 100000 h AT TEMPERATURE “C ’ r_---__--_---_-----_A----___-_-_--_-_-_~ Fr

380 390 400 410 420 430 440 450 460 470 480 490 500 3

IS : 2002-1962 N 163.8 145.1 127.4 109.9 94.1 79.5 67.7 55.9 46.1 39.2 33.4 - - Grade 1

IS : 2002-1962 Grade 2

N 210.9 186.4 168.8 141.2 121.6 103.0 88.3 74.0 G2.8 51.0 42.2 - -

N = normalizing.

- TABLE 45 CREEP RUPTURE PROPERTIES FdR FORGINGS

(Clause A-l.1 )

IS] GRADE TREATMENT ESTIMATED AVERAGE STRESS ( N/mm2 ) FOR RUPTURE IN 100 000 h AT TEMPERATURE ‘C ~_--------_-----___ h_________-______~

470 480 490 500 510 520 530 540 550 560 510 580 590 600

IS : 2811-1964 N+Q+T - 209.9 176.6 146.2 120.7 99.0 81.4 86.7 53.9 43.2 35.3 - - -

IS : 4367-1967 lOCr2Mol

NST > Q+T 167.7 154.0 141.2 127.4 114.8 102.0 90.3 78.5 68.7 589 50.9 44.2 383 34.3

N = normalizing, T = tempering, and Q = quenching.

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