Pipe Wall Thickness Calculation
This pipe wall thickness calculator determines the appropriate pipe to use per ASME B31.3. This calculator is suitable for carbon or stainless steel and for temperatures of up to 400 degrees F. Mill tolerance defaults to 12.5% per ASTM A 106 as “the minimum wall thickness at any point shall be not more than 12.5% under the nominal wall thickness specified”. For the standard rolled pipe case, electric resistance welding ERW is assumed with no NDT. These welded pipes can have a joint efficiency of 1 if welding has been NDTed.
Results
Diameter | Sch 5S | Sch 10S | Sch 10 | Sch 20 | Sch 30 | Sch 40S | STD | Sch 40 | Sch 60 | Sch 80S | XS | Sch 80 | Sch 100 | Sch 120 | Sch 140 | Sch 160 | XXS |
1/8 | 0.049 | 0.068 | 0.068 | 0.068 | 0.095 | 0.095 | 0.095 | ||||||||||
1/4 | 0.065 | 0.068 | 0.068 | 0.068 | 0.119 | 0.119 | 0.119 | ||||||||||
3/8 | 0.065 | 0.065 | 0.091 | 0.091 | 0.091 | 0.126 | 0.126 | 0.126 | |||||||||
1/2 | 0.065 | 0.083 | 0.065 | 0.109 | 0.109 | 0.109 | 0.147 | 0.147 | 0.147 | 0.187 | 0.294 | ||||||
3/4 | 0.065 | 0.083 | 0.083 | 0.113 | 0.113 | 0.113 | 0.154 | 0.154 | 0.154 | 0.218 | 0.308 | ||||||
1 | 0.065 | 0.109 | 0.109 | 0.133 | 0.133 | 0.133 | 0.179 | 0.179 | 0.179 | 0.250 | 0.358 | ||||||
1 1/4 | 0.065 | 0.109 | 0.109 | 0.140 | 0.140 | 0.140 | 0.191 | 0.191 | 0.191 | 0.250 | 0.382 | ||||||
1 1/2 | 0.065 | 0.109 | 0.109 | 0.145 | 0.145 | 0.145 | 0.200 | 0.200 | 0.200 | 0.281 | 0.400 | ||||||
2 | 0.065 | 0.109 | 0.109 | 0.154 | 0.154 | 0.154 | 0.218 | 0.218 | 0.218 | 0.343 | 0.436 | ||||||
2 1/2 | 0.083 | 0.120 | 0.120 | 0.203 | 0.203 | 0.203 | 0.276 | 0.276 | 0.276 | 0.375 | 0.552 | ||||||
3 | 0.083 | 0.120 | 0.120 | 0.216 | 0.216 | 0.216 | 0.300 | 0.300 | 0.300 | 0.438 | 0.600 | ||||||
3 1/2 | 0.083 | 0.120 | 0.120 | 0.226 | 0.226 | 0.226 | 0.318 | 0.318 | 0.318 | 0.636 | |||||||
4 | 0.083 | 0.120 | 0.120 | 0.237 | 0.237 | 0.237 | 0.337 | 0.337 | 0.337 | 0.531 | 0.674 | ||||||
5 | 0.109 | 0.134 | 0.134 | 0.258 | 0.258 | 0.258 | 0.375 | 0.375 | 0.375 | 0.500 | 0.625 | 0.750 | |||||
6 | 0.109 | 0.134 | 0.280 | 0.280 | 0.280 | 0.432 | 0.432 | 0.432 | 0.562 | 0.718 | 0.864 | ||||||
8 | 0.109 | 0.148 | 0.250 | 0.277 | 0.322 | 0.322 | 0.322 | 0.406 | 0.500 | 0.500 | 0.500 | 0.593 | 0.719 | 0.812 | 0.906 | 0.875 | |
10 | 0.134 | 0.165 | 0.250 | 0.307 | 0.365 | 0.365 | 0.365 | 0.500 | 0.500 | 0.500 | 0.593 | 0.719 | 0.844 | 1.000 | 1.125 | 1.000 | |
12 | 0.156 | 0.180 | 0.250 | 0.330 | 0.375 | 0.375 | 0.406 | 0.562 | 0.500 | 0.500 | 0.688 | 0.844 | 1.000 | 1.125 | 1.312 | 1.000 | |
14 | 0.156 | 0.188 | 0.250 | 0.375 | 0.375 | 0.438 | 0.593 | 0.500 | 0.750 | 0.938 | 1.094 | 1.250 | 1.406 | ||||
16 | 0.165 | 0.188 | 0.250 | 0.312 | 0.375 | 0.375 | 0.500 | 0.656 | 0.500 | 0.844 | 1.031 | 1.219 | 1.438 | 1.593 | |||
18 | 0.165 | 0.188 | 0.250 | 0.312 | 0.438 | 0.375 | 0.562 | 0.750 | 0.500 | 0.938 | 1.156 | 1.375 | 1.562 | 1.781 | |||
20 | 0.188 | 0.218 | 0.250 | 0.375 | 0.500 | 0.375 | 0.593 | 0.812 | 0.500 | 1.031 | 1.281 | 1.500 | 1.750 | 1.968 | |||
22 | 0.188 | 0.218 | 0.250 | 0.375 | 0.500 | 0.375 | 0.625 | 0.875 | 0.500 | 1.125 | 1.375 | 1.625 | 1.875 | 2.125 | |||
24 | 0.218 | 0.250 | 0.250 | 0.375 | 0.562 | 0.375 | 0.688 | 0.969 | 0.500 | 1.218 | 1.531 | 1.812 | 2.062 | 2.343 | |||
26 | 0.312 | 0.500 | 0.375 | 0.500 | |||||||||||||
28 | 0.312 | 0.500 | 0.625 | 0.375 | 0.500 | ||||||||||||
30 | 0.250 | 0.312 | 0.312 | 0.500 | 0.625 | 0.375 | 0.500 | ||||||||||
32 | 0.312 | 0.500 | 0.625 | 0.375 | 0.688 | 0.500 | |||||||||||
34 | 0.312 | 0.500 | 0.625 | 0.375 | 0.688 | 0.500 | |||||||||||
36 | 0.312 | 0.500 | 0.625 | 0.375 | 0.750 | 0.500 | |||||||||||
38 | 0.375 | 0.500 | |||||||||||||||
40 | 0.375 | 0.500 | |||||||||||||||
42 | 0.375 | 0.500 | |||||||||||||||
44 | 0.375 | 0.500 | |||||||||||||||
46 | 0.375 | 0.500 | |||||||||||||||
48 | 0.375 | 0.500 |