The thickness of a Schedule 40 pipe depends on its nominal pipe size (NPS), which determines the pipe’s outside diameter (OD) and wall thickness. Schedule 40 is a designation that refers to the pipe's wall thickness, and it is commonly used for various materials, including steel and PVC. Below are the wall thicknesses for Schedule 40 steel pipes based on different nominal pipe sizes (NPS).
|
NPS (Nominal Pipe Size) |
Outside Diameter (OD) |
Wall Thickness (inches) |
|
1/8" |
0.405" |
0.065" |
|
1/4" |
0.540" |
0.070" |
|
3/8" |
0.675" |
0.080" |
|
1/2" |
0.840" |
0.090" |
|
3/4" |
1.050" |
0.113" |
|
1" |
1.315" |
0.140" |
|
1 1/4" |
1.660" |
0.140" |
|
1 1/2" |
1.900" |
0.145" |
|
2" |
2.375" |
0.154" |
|
2 1/2" |
2.875" |
0.203" |
|
3" |
3.500" |
0.216" |
|
4" |
4.500" |
0.237" |
|
5" |
5.563" |
0.258" |
|
6" |
6.625" |
0.280" |
|
8" |
8.625" |
0.322" |
|
10" |
10.750" |
0.365" |
|
12" |
12.750" |
0.406" |
This table shows the wall thickness for common sizes of Schedule 40 steel pipes. The thickness increases as the pipe size increases, and the measurements apply to both the outside diameter and wall thickness for steel pipes, though they can differ slightly for other materials like PVC or copper.
