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Specifications Range
Out Diameter 1/8" through 24"
Wall Thickness Schedules:5, 10, 10S, 20, 30, 40, 40S, 80, 80S
Length 3.0m-18m


Standards: ASTM A312,ASTM A358,ASTM A813,ASTM A814
300 Series Stainless Steel Grades: 304 – 304/L – 304H – 309/S – 309H – 310/S – 310H – 316L – 317L – 321 – 321H – 347
400 Series Stainless Steel Grades: 410

Nickel Alloy Grades: Alloy 20 – 200 – 400 – 600 – 601 – 625 – 825H – 825HT – C276


Stainless Steel Seamless Pipe Tolerances

NPS Designator
 Permissib
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)
NPS Designator Outside Diameter in. Schedule 10S in. Schedule 40S in. Schedule 80S in. Schedule 160 in. Schedule XX 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 0.083 0.109 0.147 .188 .294
3/4 1.050 0.083 0.113 0.154 .218 .308
1.0 1.315 0.109 0.133 0.179 .250 .358
1 1/4 1.660 0.109 0.140 0.191 .250 .382
1 1/2 1.900 0.109 0.145 0.200 .281 .400
2 2.375 0.109 0.154 0.218 .343 .436
2 1/2 2.875 0.120 0.203 0.276 .375 .552
3 3.500 0.120 0.216 0.300 .438 .600
3 1/2 4.000 0.120 0.226 0.318 .636
4 4.500 0.120 0.237 0.337 .534 .674
5 5.563 0.134 0.258 0.375 .625 .750
6 6.625 0.134 0.280 0.432 .719 .864
8 8.625 0.148 0.322 0.500 .906 .875
10 10.750 0.165 0.365 0.500 1.125
12 12.750 0.180 0.375 0.500 1.312
14 14.000 0.188 0.375 0.500 1.406
16 16.000 0.188 0.375 0.500 1.594


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