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Steel Pipe Dimensions - ANSI Schedule 40

Internal and external diameters, areas, weights, volumes and number of threads for ANSI schedule 40 steel pipes

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Based on ASTM A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.

For full table with Length vs. External and Internal Surface, Volume, Weight and Number of Threads  - rotate the screen!

Pipe Size
(in)
Diameter
(in)

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Nominal Thickness
(in)


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Transverse Areas
(in2)

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Length of Pipe
(ft per sq. foot of surface)
Volume
(ft3/ft)
WeightNumber of Threads per inch of Screw
ExternalInternalExternalInternalSteelExternal Surface
(ft)
Internal Surface
(ft)
(lb/ft)(kg/m)
1/8 0.405 0.27 0.07 0.13 0.06 0.07 9.43 14.20 0.0004 0.24 0.36 27
¼ 0.540 0.36 0.09 0.23 0.10 0.13 7.07 10.49 0.0007 0.42 0.63 18
3/8 0.675 0.49 0.09 0.36 0.19 0.17 5.66 7.75 0.0013 0.57 0.84 18
½ 0.840 0.62 0.11 0.55 0.30 0.25 4.55 6.14 0.0021 0.85 1.26 14
¾ 1.050 0.82 0.11 0.87 0.53 0.33 3.64 4.64 0.0037 1.13 1.68 14
1 1.315 1.05 0.13 1.36 0.86 0.49 2.90 3.64 0.0060 1.68 2.50 11 ½
1 ¼ 1.660 1.38 0.14 2.16 1.50 0.67 2.30 2.77 0.0104 2.27 3.38 11 ½
1 ½ 1.900 1.61 0.15 2.84 2.04 0.80 2.01 2.37 0.0141 2.72 4.04 11 ½
2 2.375 2.07 0.15 4.43 3.36 1.08 1.61 1.85 0.0233 3.65 5.43 11 ½
2 ½ 2.875 2.47 0.20 6.49 4.79 1.70 1.33 1.55 0.0333 5.79 8.62 8
3 3.500 3.07 0.22 9.62 7.39 2.23 1.09 1.25 0.0513 7.58 11.27 8
3 ½ 4.000 3.55 0.23 12.56 9.89 2.68 0.95 1.08 0.0687 9.11 13.56 8
4 4.500 4.03 0.24 15.90 12.73 3.17 0.85 0.95 0.0884 10.79 16.06 8
5 5.563 5.05 0.26 24.30 20.00 4.30 0.69 0.76 0.1389 14.61 21.74 8
6 6.625 6.07 0.28 34.47 28.89 5.58 0.58 0.63 0.2006 18.97 28.23 8
8 8.625 7.98 0.32 58.42 50.02 8.40 0.44 0.48 0.3552 28.55 42.49 8
10 10.750 10.02 0.37 90.76 78.85 11.90 0.36 0.38 0.5476 40.48 60.24 8
12 12.750 11.94 0.41 127.64 111.90 15.74 0.30 0.32 0.7763 53.60 79.77 8
14 14.000 13.13 0.44 153.94 135.30 18.64 0.27 0.28 0.9354 63.00 93.75 8
16 16.000 15.00 0.50 201.05 176.70 24.35 0.24 0.25 1.2230 78.00 116.08 8
18 18.000 16.88 0.56 254.85 224.00 30.85 0.21 0.23 1.5550 105.00 156.26 8
20 20.000 18.81 0.59 314.15 278.00 36.15 0.19 0.20 1.9260 123.00 183.05 8
24 24.000 22.63 0.69 452.40 402.10 50.30 0.16 0.17 2.7930 171.00 254.48 8

ASTM A53 pipe - also referred to as ASME SA53 pipe - is intended for mechanical and pressure applications. Can be used in steam, water, gas and air lines. Suitable for welding and forming like coiling, bending and flanging.

  • 1 in2 = 645.2 mm2 = 6.452 cm2 = 6.452x10-4 m2
  • 1 ft (foot) = 0.3048 m
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