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Steel Pipes Dimensions - ANSI Schedule 40 

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

Pipe Size (inches) Diameter
(inches)
Nominal Thickness (inches) Transverse Areas 
(sq. inches)
Length of Pipe 
(per sq. foot of)
Volume
(Cubic feet pr. foot)
Weight Number of Threads per inch of Screw
External Internal External Internal Steel External Surface
 (feet) 
Internal Surface  (feet)  (pounds per foot. lb / ft) (kg/m)
1/8 0.41 0.27 0.07 0.13 0.06 0.07 9.43 14.20 0.0004 0.24 0.36 27
¼ 0.54 0.36 0.09 0.23 0.10 0.13 7.07 10.49 0.0007 0.42 0.63 18
3/8 0.68 0.49 0.09 0.36 0.19 0.17 5.66 7.75 0.0013 0.57 0.84 18
½ 0.84 0.62 0.11 0.55 0.30 0.25 4.55 6.14 0.0021 0.85 1.26 18
¾ 1.05 0.82 0.11 0.87 0.53 0.33 3.64 4.64 0.0037 1.13 1.68 14
1 1.32 1.05 0.13 1.36 0.86 0.49 2.90 3.64 0.0060 1.68 2.50 14
1 ¼ 1.66 1.38 0.14 2.16 1.50 0.67 2.30 2.77 0.0104 2.27 3.38 11 ½
1 ½ 1.90 1.61 0.15 2.84 2.04 0.80 2.01 2.37 0.0141 2.72 4.04 11 ½
2 2.38 2.07 0.15 4.43 3.36 1.08 1.61 1.85 0.0233 3.65 5.43 11 ½
2 ½ 2.88 2.47 0.20 6.49 4.79 1.70 1.33 1.55 0.0333 5.79 8.62 11 ½
3 3.50 3.07 0.22 9.62 7.39 2.23 1.09 1.25 0.0513 7.58 11.27 8
3 ½ 4.00 3.55 0.23 12.56 9.89 2.68 0.95 1.08 0.0687 9.11 13.56 8
4 4.50 4.03 0.24 15.90 12.73 3.17 0.85 0.95 0.0884 10.79 16.06 8
5 5.56 5.05 0.26 24.30 20.00 4.30 0.69 0.76 0.1389 14.61 21.74 8
6 6.63 6.07 0.28 34.47 28.89 5.58 0.58 0.63 0.2006 18.97 28.23 8
8 8.63 7.98 0.32 58.42 50.02 8.40 0.44 0.48 0.3552 28.55 42.49 8
10 10.75 10.02 0.37 90.76 78.85 11.90 0.36 0.38 0.5476 40.48 60.24 8
12 12.75 11.94 0.41 127.64 111.90 15.74 0.30 0.32 0.7763 53.60 79.77 8
14 14.00 13.13 0.44 153.94 135.30 18.64 0.27 0.28 0.9354 63.00 93.75 8
16 16.00 15.00 0.50 201.05 176.70 24.35 0.24 0.25 1.2230 78.00 116.08 8
18 18.00 16.88 0.56 254.85 224.00 30.85 0.21 0.23 1.5550 105.00 156.26 8
20 20.00 18.81 0.59 314.15 278.00 36.15 0.19 0.20 1.9260 123.00 183.05 8

24

24.00 22.63 0.69 452.40 402.10 50.30 0.16 0.17 2.7930 171.00 254.48 8
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