4-1 alro.com 888-888-ALRO 2 5 7 6 Steel Tube Steel Tube and Pipe and Pipe Steel Tube & Pipe Steel Tube & Pipe Round, Square and Rectangular Tube & Pipe Round, Square and Rectangular Tube & Pipe Square Tubing Square Tubing ................................................... ................................................... 4-2 thru 4-3 4-2 thru 4-3 Rectangular Tubing Rectangular Tubing ........................................ ........................................ 4-3 thru 4-5 4-3 thru 4-5 Epox Z Kote Epox Z Kote ® ® Primed Tubing Primed Tubing ...................... ...................... 4-6 thru 4-7 4-6 thru 4-7 Round Mechanical Tubing Round Mechanical Tubing ......................... ......................... 4-8 thru 4-35 4-8 thru 4-35 Hydraulic Tubing (Seamless) Hydraulic Tubing (Seamless) ................................. ................................. 4-36 4-36 Carbon Steel Pipe Carbon Steel Pipe ........................................ ........................................ 4-37 thru 4-39 4-37 thru 4-39 Tolerances, Mechanical Tubing Tolerances, Mechanical Tubing ........................... ........................... 4-40 4-40 Tolerances, Structural Tubing Tolerances, Structural Tubing .............................. .............................. 4-40 4-40 Tolerances, Cold Drawn Seamless Tolerances, Cold Drawn Seamless ..... ..... 4-41 thru 4-42 4-41 thru 4-42 Tolerances, Seamless Round Mech Tolerances, Seamless Round Mech ................... ................... 4-42 4-42 Tolerances, AWHR Round Tubing Tolerances, AWHR Round Tubing ........ ........ 4-43 thru 4-46 4-43 thru 4-46 Tolerances, DOM Tubing Tolerances, DOM Tubing .......................................... .......................................... 4-47 4-47 Tolerances, Hot Finished Seamless Tolerances, Hot Finished Seamless .................. .................. 4-48 4-48 Tolerances, Ovality Tolerances, Ovality ..................................................... ..................................................... 4-48 4-48 Tolerances, Structural Pipe Tolerances, Structural Pipe ................................... ................................... 4-49 4-49 Tolerances, Hydraulic Tubing Tolerances, Hydraulic Tubing ............................... ............................... 4-49 4-49 WARNING: These products can potentially expose you to chemicals including Nickel, Chromium, Lead, Cobalt, Mercury and Beryllium, which are known to the state of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
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Steel Tube & Pipe€¦ · 8 ga 0.165 3.320 7 ga 0.188 3.680 Rectangular Tubing Mechanical Tubing: Under 2" or 11 ga and under - ASTM A-513. Structural Tubing: 2" and over 11 ga wall
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4-1
alro.com 888-888-ALRO2 5 7 6
Steel Tube
Steel Tubeand P
ipeand P
ipe
Steel Tube & PipeSteel Tube & PipeRound, Square and Rectangular Tube & PipeRound, Square and Rectangular Tube & Pipe
WARNING: These products can potentially expose you to chemicals including Nickel, Chromium, Lead, Cobalt, Mercury and Beryllium, which are known to the state of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
2 x 2 13 ga 0.095 2.461 12 ga 0.109 2.803 11 ga 0.125 3.060 10 ga 0.134 3.400 8 ga 0.165 4.120 7 ga 0.188 4.320 1/4 0.250 5.4102-1/8 x 2-1/8 11 ga 0.125 3.2702-1/4 x 2-1/4 16 ga 0.065 1.923 11 ga 0.125 3.510 1/4 0.250 6.2602-1/2 x 2-1/2 16 ga 0.065 2.120 14 ga 0.083 2.728 12 ga 0.109 3.544 11 ga 0.125 3.900 10 ga 0.134 4.312 8 ga 0.165 5.240 7 ga 0.188 5.590 .238 0.238 6.830 1/4 0.250 7.110 5/16 0.312 8.4403 x 3 14 ga 0.083 3.240 11 ga 0.125 4.750 10 ga 0.134 5.223 8 ga 0.165 6.130 7 ga 0.188 6.870 1/4 0.250 8.810 5/16 0.312 10.580 3/8 0.375 12.1703-1/2 x 3-1/2 11 ga 0.125 5.610 10 ga 0.134 6.134 8 ga 0.165 7.250 7 ga 0.188 8.150 1/4 0.250 10.510 5/16 0.312 12.710 3/8 0.375 14.7104 x 4 14 ga 0.083 4.320 11 ga 0.125 6.460 10 ga 0.134 7.045 8 ga 0.165 8.730 7 ga 0.188 9.420 1/4 0.250 12.210 5/16 0.313 14.830 3/8 0.375 17.270 1/2 0.500 21.630
1/2 x 1/2 18 ga 0.049 0.301 16 ga 0.065 0.3855/8 x 5/8 18 ga 0.049 0.400 16 ga 0.065 0.4953/4 x 3/4 18 ga 0.049 0.467 16 ga 0.065 0.606 14 ga 0.083 0.753 11 ga 0.120 1.0287/8 x 7/8 18 ga 0.049 0.550 16 ga 0.065 0.716 14 ga 0.083 0.8941 x 1 18 ga 0.049 0.634 16 ga 0.065 0.827 15 ga 0.072 0.909 14 ga 0.083 1.035 13 ga 0.095 1.169 12 ga 0.109 1.321 11 ga 0.120 1.436 10 ga 0.134 1.5831-1/4 x 1-1/4 18 ga 0.049 0.780 16 ga 0.065 1.048 14 ga 0.083 1.317 13 ga 0.095 1.492 12 ga 0.109 1.691 11 ga 0.120 1.844 3/16 0.188 2.4001-1/2 x 1-1/2 16 ga 0.065 1.269 14 ga 0.083 1.600 13 ga 0.095 1.815 12 ga 0.109 2.062 11 ga 0.120 2.252 10 ga 0.134 2.489 8 ga 0.165 2.760 7 ga 0.188 3.040 1/4 0.250 4.2501-3/4 x 1-3/4 16 ga 0.065 1.490 14 ga 0.083 1.882 12 ga 0.109 2.433 11 ga 0.120 2.660 7 ga 0.188 3.6802 x 2 18 ga 0.049 1.283 16 ga 0.065 1.710 14 ga 0.083 2.160
Square TubingMechanical Tubing: Under 2" or 11 ga and under - ASTM A-513. Structural Tubing: 2" and over 11 ga wall thickness - ASTM A-500 Grade B. Standard Lengths: 20 ft., 24 ft., 40 ft., and 48 ft.
WallThickness(inches)
Weight(lbs./ft.)
4-1/2 x 4-1/2 11 ga 0.125 7.310 10 ga 0.134 7.790 8 ga 0.165 9.500 7 ga 0.188 10.700 1/4 0.250 13.910 5/16 0.313 16.960 3/8 0.375 19.820 1/2 0.500 25.0305 x 5 11 ga 0.125 8.160 10 ga 0.134 8.710 8 ga 0.165 10.610 7 ga 0.188 11.970 1/4 0.250 15.620 5/16 0.313 19.080 3/8 0.375 22.370 1/2 0.500 28.4306 x 6 11 ga 0.125 9.860 10 ga 0.134 10.530 8 ga 0.165 12.870 7 ga 0.188 14.530 1/4 0.250 19.020 5/16 0.312 23.340 3/8 0.375 27.480 1/2 0.500 35.240 5/8 0.625 42.3007 x 7 7 ga 0.188 17.080 1/4 0.250 22.420 5/16 0.313 27.600 3/8 0.375 32.580 1/2 0.500 42.050 5/8 0.625 50.8108 x 8 7 ga 0.188 19.630 1/4 0.250 25.820 5/16 0.313 31.840 3/8 0.375 37.690 1/2 0.500 48.850 5/8 0.625 59.32010 x 10 7 ga 0.188 24.730 1/4 0.250 32.630 5/16 0.313 40.350 3/8 0.375 47.900 1/2 0.500 62.460 5/8 0.625 76.330
Square TubingMechanical Tubing: Under 2" or 11 ga and under - ASTM A-513. Structural Tubing: 2" and over 11 ga wall thickness - ASTM A-500 Grade B. Standard Lengths: 20 ft., 24 ft., 40 ft., and 48 ft.
1 x 1/2 16 ga 0.065 0.606 1-1/2 x 1/2 16 ga 0.065 0.827 1-1/2 x 3/4 16 ga 0.065 0.937 14 ga 0.083 1.176 11 ga 0.120 1.601 1-1/2 x 1 16 ga 0.065 1.048 14 ga 0.083 1.317 11 ga 0.120 1.844 10 ga 0.134 2.134 2 x 1 18 ga 0.049 0.956 16 ga 0.065 1.269 14 ga 0.083 1.600 11 ga 0.120 2.252 10 ga 0.134 2.489 8 ga 0.165 2.760 7 ga 0.188 3.0402 x 1-1/4 14 ga 0.083 1.741 11 ga 0.120 2.456 2 x 1-1/2 16 ga 0.065 1.500 14 ga 0.083 1.882 11 ga 0.120 2.660 10 ga 0.134 2.945 8 ga 0.165 3.320 7 ga 0.188 3.680
Rectangular TubingMechanical Tubing: Under 2" or 11 ga and under - ASTM A-513. Structural Tubing: 2" and over 11 ga wall thickness - ASTM A-500 Grade B. Standard Lengths: 20 ft., 24 ft., 40 ft., and 48 ft.
2-1/2 x 1 16 ga 0.065 1.489 14 ga 0.083 1.882 11 ga 0.120 2.660 10 ga 0.134 2.950 8 ga 0.165 3.320 7 ga 0.188 3.680 2-1/2 x 1-1/4 14 ga 0.083 2.0232-1/2 x 1-1/2 16 ga 0.065 1.710 14 ga 0.083 2.160 11 ga 0.125 3.070 10 ga 0.134 3.401 8 ga 0.165 4.118 7 ga 0.188 4.320 1/4 0.250 5.4102-1/2 x 2 11 ga 0.125 3.480 10 ga 0.134 3.856 8 ga 0.165 4.440 7 ga 0.188 4.9603 x 1 16 ga 0.065 1.710 14 ga 0.083 2.160 12 ga 0.109 2.803 11 ga 0.125 3.070 10 ga 0.134 3.401 8 ga 0.165 4.118 7 ga 0.188 4.320
3 x 1-1/2 16 ga 0.065 1.932 14 ga 0.083 2.390 11 ga 0.125 3.480 10 ga 0.134 3.856 8 ga 0.165 4.440 7 ga 0.188 4.960 1/4 0.250 6.2503 x 2 16 ga 0.065 2.140 14 ga 0.083 2.728 13 ga 0.095 3.107 11 ga 0.125 3.900 10 ga 0.134 4.312 8 ga 0.165 5.239 7 ga 0.188 5.590 1/4 0.250 7.110 5/16 0.313 8.450 3-1/2 x 1-1/2 11 ga 0.125 3.900 10 ga 0.134 4.312 8 ga 0.165 5.239 7 ga 0.188 5.6003-1/2 x 2-1/2 11 ga 0.125 4.750 10 ga 0.134 5.070 8 ga 0.165 6.130 7 ga 0.188 6.870 1/4 0.250 8.8104 x 1-1/2 11 ga 0.125 4.330 7 ga 0.188 6.230
4 x 2 14 ga 0.083 3.293 11 ga 0.125 4.750 10 ga 0.134 5.070 8 ga 0.165 6.130 7 ga 0.188 6.870 4 x 2 1/4 0.250 8.810 5/16 0.313 10.580 3/8 0.375 12.1704 x 2-1/2 11 ga 0.125 5.180 7 ga 0.188 7.4824 x 3 11 ga 0.125 5.610 10 ga 0.134 6.134 8 ga 0.165 7.250 7 ga 0.188 8.150 1/4 0.250 10.510 5/16 0.313 12.700 3/8 0.375 14.7204-1/2 x 3 11 ga 0.125 6.030 10 ga 0.134 6.589 8 ga 0.165 8.045 7 ga 0.188 8.780 1/4 0.250 11.3605 x 2 11 ga 0.125 5.610 10 ga 0.134 6.134 8 ga 0.165 7.250 7 ga 0.188 8.150 1/4 0.250 10.510 5/16 0.313 12.700 3/8 0.375 14.7205 x 2-1/2 11 ga 0.125 6.030 10 ga 0.134 6.589 8 ga 0.165 8.045 7 ga 0.188 8.780 1/4 0.250 11.3605 x 3 11 ga 0.125 6.460 10 ga 0.134 7.045 8 ga 0.165 8.370 7 ga 0.188 9.420 1/4 0.250 12.210 5/16 0.313 14.840 3/8 0.375 17.270 1/2 0.500 21.630
Mechanical Tubing: Under 2" or 11 ga and under - ASTM A-513. Structural Tubing: 2" and over 11 ga wall thickness - ASTM A-500 Grade B. Standard Lengths: 20 ft., 24 ft., 40 ft., and 48 ft.
Rectangular Tubing
5 x 4 11 ga 0.125 7.310 10 ga 0.134 7.790 8 ga 0.165 9.500 7 ga 0.188 10.700 1/4 0.250 13.9105 x 4 5/16 0.313 16.960 3/8 0.375 19.820 1/2 0.500 25.0306 x 2 11 ga 0.125 6.460 10 ga 0.134 7.045 8 ga 0.165 8.370 7 ga 0.188 9.420 1/4 0.250 12.210 5/16 0.313 14.830 3/8 0.375 17.2706 x 3 11 ga 0.125 7.300 10 ga 0.134 7.790 8 ga 0.165 9.500 7 ga 0.188 10.700 1/4 0.250 13.910 5/16 0.313 16.960 3/8 0.375 19.820 1/2 0.500 25.0306 x 4 11 ga 0.125 8.160 10 ga 0.134 8.710 8 ga 0.165 10.610 7 ga 0.188 11.970 1/4 0.250 15.620 5/16 0.313 19.080 3/8 0.375 22.370 1/2 0.500 28.4307 x 3 11 ga 0.125 8.160 10 ga 0.134 8.710 8 ga 0.165 10.610 7 ga 0.188 11.970 1/4 0.250 15.620 5/16 0.313 19.090 3/8 0.375 22.370 1/2 0.500 28.4307 x 4 11 ga 0.125 9.010 10 ga 0.134 9.620 8 ga 0.165 11.740
7 x 4 7 ga 0.188 13.300 1/4 0.250 17.320 5/16 0.313 21.220 3/8 0.375 24.930 1/2 0.500 31.8407 x 5 11 ga 0.125 9.860 10 ga 0.134 10.530 8 ga 0.165 12.870 7 ga 0.188 14.530 1/4 0.250 19.020 5/16 0.313 23.340 3/8 0.375 27.480 1/2 0.500 35.240 8 x 2 11 ga 0.125 8.160 10 ga 0.134 8.710 8 ga 0.165 10.610 7 ga 0.188 11.970 1/4 0.250 15.620 5/16 0.313 19.080 3/8 0.375 22.370 8 x 3 11 ga 0.125 9.010 10 ga 0.134 9.620 8 ga 0.165 11.740 7 ga 0.188 13.300 1/4 0.250 17.320 5/16 0.313 21.220 3/8 0.375 24.930 1/2 0.500 31.8408 x 4 11 ga 0.125 9.860 10 ga 0.134 10.530 8 ga 0.165 12.870 7 ga 0.188 14.530 1/4 0.250 19.020 5/16 0.313 23.340 3/8 0.375 27.480 1/2 0.500 35.240 5/8 0.625 42.3008 x 6 7 ga 0.188 17.080 1/4 0.250 22.420 5/16 0.313 27.590 3/8 0.375 32.580 1/2 0.500 42.050 5/8 0.625 50.810
Mechanical Tubing: Under 2" or 11 ga and under - ASTM A-513. Structural Tubing: 2" and over 11 ga wall thickness - ASTM A-500 Grade B. Standard Lengths: 20 ft., 24 ft., 40 ft., and 48 ft.
Product DescriptionSteel tubing produced to A513 and A500 B/C specifications that is phosphate pretreated and coated with a fully cured weldable epoxy powder coat primer.
Performance Values • Salt Spray - ASTM B117 1,000 hours @ 1 mil with zero creepage @ scribe • Adhesion - ASTM D3359-90 5B • Impact - 100 inch lbs without any de-lamination of coating • Flexible - Forming and bending without cracking or flaking • DFT - 0.5 mil average dry film thickness
1.5 x 1 2 x 1 2 x 1.5 2.5 x 1.5 3 x 1 3 x 2 4 x 2 4 x 3 5 x 2 5 x 2.5 5 x 3 5 x 4 6 x 2 6 x 3 6 x 4 7 x 3 7 x 4 7 x 5 8 x 2 8 x 3 8 x 4 8 x 6 10 x 2 10 x 4
1-1/2 2 2-1/2 3 3-1/2
4 5 6 8
Epox Z Kote®
Square Tubing Available Gauges
.083 .120 .125 .188 .250 .313 .375 .500
Outside Dimension
(inches)
Epox Z Kote® Pipe
Epox Z Kote® Rectangular Tubing
Most sizes are available in schedule 40 & schedule 80. Contact your Alro representative for more details.
Epox Z Kote®
Nominal Pipe Sizes in Inches
Available in Structural (A500) and Mechanical (A513) grades
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Outside Dimension (OD) & Gauge (inches)
WallThickness
Dec-In. ERW CDS DOM HFSWeight (lbs./ft.)
InsideDiameter
(ID)
Continued on next page
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
Drawn over Mandrel (DOM) tubing is defined by 3 different dimensions:• Inside Diameter (ID) • Outside Diameter (OD) • Wall Thickness
When ordering, only 2 of the 3 tolerances must be defined. Alro Steel purchases DOM tubing, for general inventory, to the outside diameter and inside diameter.
If you do not see a size listed, please contact your Alro representative.
ERW - Electric Resistance WeldCDS - Cold Drawn SeamlessDOM - Drawn Over MandrelHFS - Hot Finished Seamless
20 foot - ERWx - Stock Size17 - 24 ft. random lengths DOM/CDS12 - 24 ft. - HFS
1/8 OD x .028 Wall 0.069 0.0290 - .035 Wall 0.055 0.0320 3/16 OD x .035 Wall 0.117 0.0572 1/4 OD x .028 Wall 0.194 0.0660 - .035 Wall 0.180 0.0804 .049 Wall 0.152 0.1050 .065 Wall 0.120 0.1280 - 5/16 OD x .035 Wall 0.242 0.1040 3/8 OD x .035 Wall 0.305 0.1271 .049 Wall 0.277 0.1706 .065 Wall 0.245 0.2152 1/2 OD x .035 Wall 0.430 0.1738 .049 Wall 0.402 0.2360 .065 Wall 0.370 0.3020 .083 Wall 0.334 0.3700 -5/8 OD x .035 Wall 0.555 0.2205 .049 Wall 0.527 0.3010 .065 Wall 0.495 0.3890 .083 Wall 0.459 0.4810 3/4 OD x .035 Wall 0.680 0.2670 - .049 Wall 0.652 0.3670 .065 Wall 0.620 0.4755 .083 Wall 0.584 0.5910 .095 Wall 0.560 0.6646 - .120 Wall 0.510 0.8070 1 OD x .049 Wall 0.930 0.4980 - .065 Wall 0.870 0.6490 .083 Wall 0.834 0.8130 - .120 Wall 0.760 1.1280
InsideDia. (ID)
Weight(lbs./ft.) Seamless
This SAE Standard covers cold drawn and annealed seamless low-carbon steel pressure tubing intended for use as hydraulic lines and in other applications requiring tubing of a quality suitable for flaring and bending. = Alro Stock Size
Specified Mill Length Tolerances for Square & Rectangular Structural Tubing
Widest Side(inches)
Up thru 22 ft. (6.7m)
Over Under
*Measured at corners at least 2" from cut end of tubing.
Over Under
Straightness TolerancesMax. = .025" per ft.
3/8 thru 5/8 Plus or Minus .004 Over 5/8 up to 1-1/8 Plus or Minus .005 1-1/8 up to 1-1/2 Plus or Minus .006 1-1/2 to 2 Plus or Minus .008*Measured at corners at least 2" from cut end of tubing.
Tolerance(inches)
Convexity and Concavity Tolerances**
Up thru 2-1/2 Plus or Minus .010 Over 2-1/2 to 4 Plus or Minus .015
**Measured in center of the flat sides, applies to size determined at the corners.
Up thru 2-1/2 (63.5) 0.020 (0.51) Over 2-1/2 thru 3-1/2 (63.5 to 88.9) 0.025 (0.64) Over 3-1/2 thru 5-1/2 (88.9 to 139.7) 0.030 (0.76) Over 5-1/2 (139.7) ±1%*Tolerances include allowance for convexity and concavity. For rectangular sec-tions, the tolerance calculated for the larger flat dimension shall also apply to the smaller flat dimension. This tolerance may be increased 50% when applied to the smaller dimension, if the ratio of cross-sectional dimensions is between 1.5 and 3, and 100% when the ratio exceeds 3.
Tolerance*, Plus and Minusinches (mm)
Straightness Tolerances Wall Tolerances
Mechanical Tubing TolerancesTolerances, Outside Dimensions for Square and Rectangular Tubing*
• Many tubes with ID less than 50% of OD or with wall more than 25% of OD, or with wall over 1-1/4", or weighing more than 90 lb./ft. are difficult to draw over a mandrel. Therefore, the ID can vary over or under by an amount equal to 10% of the wall thickness.• For tubes with ID less than 1/2", or less than 5/8" when the wall thickness is more than 20% of the OD, which are not commonly drawn over a mandrel the above footnote not applicable.• Tubing having a wall less than 3% of the OD cannot be straightened properly without a certain amount of distortion. Consequently such tubes, while having an average OD and ID within the tolerances shown in this table, require an ovality of tolerance of 1/2% over and under nominal outside diameter, in addition to the tolerances indicated in this table.
Wall Thickness as % of ODASTM A519 thru 1.4999" ID 1.500" ID & up
Straightness Tolerances for Seamless Round Mechanical TubingNOTE 1—The straightness variation for any 3 ft (0.9 m) of length is determined by measuring the concavity between the tube and a 3-ft straightedge with a feeler gage. The total variation, that is, the maximum curvature at any point in the total length of tube, is determined by rolling the tube on a surface plate and measuring the concavity with a feeler gage.NOTE 2—The tolerances apply generally to unannealed, finish-annealed, and medium-annealed cold-finished or hot-finished tubes. When straightening stress would interfere with the use of the end product, the straightness tolerances shown do not apply when tubing is specified “not to be straightened after furnace treatment.’’ These straightness tolerances do not apply to soft-annealed or quenched and tempered tubes.
Size Limits Maximum Maximum Curvature in Maximum Curvature for Curvature Total Lengths, in. (mm) Lengths under 3 ft or 1 m in any 3 ft/in. (mm/m)OD 5 in. (127.0 mm) and smaller. 0.030 (0.83) 0.030 × (no. of ft of length/3) ratio of 0.010 in./ft or 0.83 mm/m Wall thickness, over 3 % of OD (0.83 × no. of m of length)OD over 5 to 8 in. (127.0 to 203.2 mm), 0.045 (1.25) 0.045 × (no. of ft of length/3) ratio of 0.015 in./ft or 1.25 mm/m incl. Wall thickness, over 4 % of OD (1.25 × no. of m of length)OD over 8 to 12-3⁄4 in. 0.060 (1.67) 0.060 × (no. of ft of length/3) ratio of 0.020 in./ft or 16.7 mm/m (203.2 to 323.8 mm), incl. (1.67 × no. of m of length) Wall thickness, over 4 % of OD
Sizes over 12-3/4" do not have an ASTM published straightness tolerance. These sizes vary by producer. Check with your Alro Representative for more details.
Diameter Tolerances for D.O.M TubingASTM A513-T5Outside diameter tolerances for cold rolled steel tubing, sink drawn and mandrel drawn
Over Under Over Under Up to 0.499 all .004 .000 - - 0.500 - 1.699 all .005 .000 .000 .005 1.700 - 2.099 all .006 .000 .000 .006 2.100 - 2.499 all .007 .000 .000 .007 2.500 - 2.899 all .008 .000 .000 .008 2.900 - 3.299 all .009 .000 .000 .009 3.300 - 3.699 all .010 .000 .000 .010 3.700 - 4.099 all .011 .000 .000 .011 4.100 - 4.499 all .012 .000 .000 .012 4.500 - 4.899 all .013 .000 .000 .013 4.900 - 5.299 all .014 .000 .000 .014 5.300 - 5.549 all .015 .000 .000 .015 5.550 - 5.999 under 6 .010 .010 .010 .010 6 and over .009 .009 .009 .009 6.000 - 6.499 under 6 .013 .013 .013 .013 6 and over .010 .010 .010 .010 6.500 - 6.999 under 6 .015 .015 .015 .015 6 and over .012 .012 .012 .012 7.000 - 7.499 under 6 .018 .018 .018 .018 6 and over .013 .013 .013 .013 7.500 - 7.999 under 6 .020 .020 .020 .020 6 and over .015 .015 .015 .015 8.000 - 8.499 under 6 .023 .023 .023 .023 6 and over .016 .016 .016 .016 8.500 - 8.999 under 6 .025 .025 .025 .025 6 and over .017 .017 .017 .017 9.000 - 9.499 under 6 .028 .028 .028 .028 6 and over .019 .019 .019 .019 9.500 - 9.999 under 6 .030 .030 .030 .030 6 and over .020 .020 .020 .020 10.000 - 10.999 all .034 .034 .034 .034 11.000 - 11.999 all .035 .035 .035 .035 12.000 - 12.999 all .036 .036 .036 .036 13.000 - 13.999 all .037 .037 .037 .037 14.000 - 14.999 all .038 .038 .038 .038NOTE: Alro Steel listsA Tubing, flash in or flash controlled which is further processed without mandrel to obtain tolerances closer than those .B Birmingham Wire Gauge.C Where the elipsis (...) appears in this table, the tolerance is not addressed.
Straightness-- The straightness tolerance is 1/16 in./3 ft (1.7mm/1m). The test method for straightness measurement is at the manufacturer's option, unless a specific test method is specified in the purchase order.
Types 3,4, (Sink Drawn)A,B Types 5,6 Types 5 and 6 OD Size Wall % (Mandrel Drawn)B,C (Mandrel Drawn)B,C,D RangeA of OD OD in Inches ID in Inches
Ovality shall be within the below tolerance except when wall thickness is less than 3% of the OD. In such cases, the additional ovality shall be as follows, but the mean diameter shall be within the specified tolerance:
Outside Diameter Additional Ovality Tolerance (inches) (inches) Up to 2.000 .010 Over 2.000 to 3.000 .015 Over 3.000 to 4.000 .020 Over 4.000 to 5.000 .025 Over 5.000 to 6.000 .030 Over 6.000 to 7.000 .035 Over 7.000 to 8.000 .040 Over 8.000 to 9.000 .045 Over 9.000 to 10.000 .050 Over 10.000 to 11.000 .055 Over 11.000 to 12.000 .060 Over 12.000 to 12.500 .065
Ovality Tolerances ASTM A513-T5
Outside Diameter in Inches Over Under Up to 2.999 .020 .020 3.000 to 4.499 .025 .025 4.500 to 5.999 .031 .031 6.000 to 7.499 .037 .037 7.500 to 8.999 .045 .045 9.000 to 10.750 .050 .050 ADiameter tolerances are not applicable to normalized and tempered or quenched and tempered conditions. BThe common range of sizes of hot finished tubes is 1½" to 10¾" outside diameter with wall thickness at least 3% more of outside diameter, but not less than 0.095". CLarger sizes are available; consult manufacturer for sizes and tolerances.
Outside Diameter Tolerances for Hot Finished Seamless TubingA,B,C
Hot Finished Seamless Round Tubing Wall Thickness Tolerances
Outside Outside Outside Diameter Diameter Diameter 2.999" 3.000" 6.000 in. and Smaller to 5.999" to 10.750" Under 15 12.5 10.0 10.0 15 and over 10.0 7.5 10.0 AWall thickness tolerances may not be applicable to walls 0.199" and less; consult manufacturer for wall tolerances on such tube sizes.
Wall Thickness in Inches as % of OD
ASTM A519
Wall Thickness Tolerance in Inches, A % Over and Under Nominal
Below 3-1/2 to 1-1/2 incl. 0.010 0.010 0.010 0.010Below 1-1/2 to 1/2 ID incl. 0.005 0.005 0.005 0.005Below 1/2 ID 0.003 0.003 0.005 0.005
When the outside diameter and wall thickness of 1/2 inch to 3-1/2 inch OD tubes are specified, the outside diameter shall conform to the tolerances given in the above table, and the wall thicknesses shall not vary from that specified more than plus or minus 10 percent. When less than 1/2 inch ID, the outside diameter shall conform to the tolerances given in the above table. The wall thickness shall not vary from that specified more than plus or minus 15 percent.
OD Sizes inches
Outside diameter at any point shall not vary more than: Nominal Over Under 1-1/2" and smaller 1/64" 1/64" 2" and larger 1% 1%
Tested Pipe (A-53) Tolerances
Structural Pipe Tolerances
1/8 times the number of feet of total length divided by 5Straightness
Up to 22 ft. -1/4/+ 1/2 Over 22 ft. to 44 ft. -1/4/+ 3/4
Length Tolerance Mill Cut
0.840 thru 1.900 + 0.5% 2.000 and larger + 0.75% The outside diameter measurements shall be made at positions at least 1" from either end of the pipe.
Outside Diameter (inches)
Inside Dia. (inches)Outside Dia. (inches)Minus Plus MinusPlus
Wall Tolerance ± 10% of nominal wall specified
Hydraulic Tubing - (Seamless) Tolerances SAE J-524The diameter of the tubing shall not vary from that specified more than the following amounts:
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