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
DiameterSch 5SSch 10SSch 10Sch 20Sch 30Sch 40SSTDSch 40Sch 60Sch 80SXSSch 80Sch 100Sch 120Sch 140Sch 160XXS
1/80.0490.0680.0680.0680.0950.0950.095
1/40.0650.0680.0680.0680.1190.1190.119
3/80.0650.0650.0910.0910.0910.1260.1260.126
1/20.0650.0830.0650.1090.1090.1090.1470.1470.1470.1870.294
3/40.0650.0830.0830.1130.1130.1130.1540.1540.1540.2180.308
10.0650.1090.1090.1330.1330.1330.1790.1790.1790.2500.358
1 1/40.0650.1090.1090.1400.1400.1400.1910.1910.1910.2500.382
1 1/20.0650.1090.1090.1450.1450.1450.2000.2000.2000.2810.400
20.0650.1090.1090.1540.1540.1540.2180.2180.2180.3430.436
2 1/20.0830.1200.1200.2030.2030.2030.2760.2760.2760.3750.552
30.0830.1200.1200.2160.2160.2160.3000.3000.3000.4380.600
3 1/20.0830.1200.1200.2260.2260.2260.3180.3180.3180.636
40.0830.1200.1200.2370.2370.2370.3370.3370.3370.5310.674
50.1090.1340.1340.2580.2580.2580.3750.3750.3750.5000.6250.750
60.1090.1340.2800.2800.2800.4320.4320.4320.5620.7180.864
80.1090.1480.2500.2770.3220.3220.3220.4060.5000.5000.5000.5930.7190.8120.9060.875
100.1340.1650.2500.3070.3650.3650.3650.5000.5000.5000.5930.7190.8441.0001.1251.000
120.1560.1800.2500.3300.3750.3750.4060.5620.5000.5000.6880.8441.0001.1251.3121.000
140.1560.1880.2500.3750.3750.4380.5930.5000.7500.9381.0941.2501.406
160.1650.1880.2500.3120.3750.3750.5000.6560.5000.8441.0311.2191.4381.593
180.1650.1880.2500.3120.4380.3750.5620.7500.5000.9381.1561.3751.5621.781
200.1880.2180.2500.3750.5000.3750.5930.8120.5001.0311.2811.5001.7501.968
220.1880.2180.2500.3750.5000.3750.6250.8750.5001.1251.3751.6251.8752.125
240.2180.2500.2500.3750.5620.3750.6880.9690.5001.2181.5311.8122.0622.343
260.3120.5000.3750.500
280.3120.5000.6250.3750.500
300.2500.3120.3120.5000.6250.3750.500
320.3120.5000.6250.3750.6880.500
340.3120.5000.6250.3750.6880.500
360.3120.5000.6250.3750.7500.500
380.3750.500
400.3750.500
420.3750.500
440.3750.500
460.3750.500
480.3750.500