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what is the meaning of schedule 40 pipe?
based on the nps and schedule of a pipe, the pipe outside diameter (od) and wall thickness can be obtained from reference tables such as those below, which are based on asme standards b36.10m and b36.19m. for example, nps 14 sch 40 has an od of 14 inches (355.6 mm) and a wall thickness of 0.437 inches (11.1 mm).
sch 40 steel pipe dimension according ansi b 36.10
|
nominal size [inches] |
outside diameter [inches] |
outside diameter [mm] |
wall thickness [inches] |
wall thickness [mm] |
weight [lb/ft] |
weight [kg/m] |
|
1/8 |
0.405 |
10.3 |
0.068 |
1.73 |
0.24 |
0.37 |
|
1/4 |
0.540 |
13.7 |
0.088 |
2.24 |
0.42 |
0.84 |
|
1/2 |
0.840 |
21.3 |
0.109 |
2.77 |
0.85 |
1.27 |
|
3/4 |
1.050 |
26.7 |
0.113 |
2.87 |
1.13 |
1.69 |
|
1 |
1.315 |
33.4 |
0.133 |
3.38 |
1.68 |
2.50 |
|
1 1/4 |
1.660 |
42.2 |
0.140 |
3.56 |
2.27 |
3.39 |
|
1 1/2 |
1.900 |
48.3 |
0.145 |
3.68 |
2.72 |
4.05 |
|
2 |
2.375 |
60.3 |
0.154 |
3.91 |
3.65 |
5.44 |
|
2 1/2 |
2.875 |
73.0 |
0.203 |
5.16 |
5.79 |
8.63 |
|
3 |
3.500 |
88.9 |
0.216 |
5.49 |
7.58 |
11.29 |
|
3 1/2 |
4.000 |
101.6 |
0.226 |
5.74 |
9.11 |
13.57 |
|
4 |
4.500 |
114.3 |
0.237 |
6.02 |
10.79 |
|
