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Stainless Steel Welded Pipe
Diameter of Stainless Pipe | 11/8″ thru 36″ |
300 Series Stainless Steel Grades | 304 ,304/L, 304H, 309/S, 309H, 310/S, 310H, 316L, 317L, 321 , 321H , 347 ,347H |
400 Series Stainless Steel Grades | 410 , 410S |
Nickel Alloy Grades | Duplex 2205, Duplex 2507 |
Welded Stainless Steel Pipe Tolerances
NPS Designator | Permissible Variations in Outside Diameter | |
Over In. | Under In. | |
1/8 to 1-1/2, incl | 1/64 (0.015) | 1/32 (0.031) |
Over 1-1/2 to 4, incl | 1/32 (0.031) | 1/32 (0.031) |
Over 4 to 8, incl | 1/16 (0.062) | 1/32 (0.031) |
Over 8 to 18, incl | 3/23 (0.093) | 1/32 (0.031) |
Nominal Wall Thickness:
NPS Designator | Outside Diameter in. | Schedule 5S in. | Schedule 10S in. | Schedule 40S in. | Schedule 80S in. |
1/4 | 0.540 | 0.065 | 0.088 | 0.119 | |
3/8 | 0.675 | 0.065 | 0.091 | 0.126 | |
1/2 | 0.840 | 0.065 | 0.083 | 0.109 | 0.147 |
3/4 | 1.050 | 0.065 | 0.083 | 0.113 | 0.154 |
1.0 | 1.315 | 0.065 | 0.109 | 0.133 | 0.179 |
1 1/4 | 1.660 | 0.065 | 0.109 | 0.140 | 0.191 |
1 1/2 | 1.900 | 0.065 | 0.109 | 0.145 | 0.200 |
2 | 2.375 | 0.065 | 0.109 | 0.154 | 0.218 |
2 1/2 | 2.875 | 0.083 | 0.120 | 0.203 | 0.276 |
3 | 3.500 | 0.083 | 0.120 | 0.216 | 0.300 |
3 1/2 | 4.000 | 0.083 | 0.120 | 0.226 | 0.318 |
4 | 4.500 | 0.083 | 0.120 | 0.237 | 0.337 |
5 | 5.563 | 0.109 | 0.134 | 0.258 | 0.375 |
6 | 6.625 | 0.109 | 0.134 | 0.280 | 0.432 |
8 | 8.625 | 0.109 | 0.148 | 0.322 | 0.500 |
10 | 10.750 | 0.134 | 0.165 | 0.365 | 0.500 |
12 | 12.750 | 0.156 | 0.180 | 0.375 | 0.500 |