Stainless seamless and welded pipe series
Stainless Steel Pipes
Stainless seamless and welded pipe series for selection by size, connection and service requirements. Send the complete specification to our sales contact for confirmation.
- Material alternatives
- 304 / 304L / 316 / 316L / 321 / 317L / 310S / 904L; select one
- Source production range
- OD6–630 mm; wall0.8–25 mm; size/grade/route combination TBC
- Routes
- Welded or seamless; select one
- Heat-exchanger tube alternatives
- ASTM A312/A249/A269 or EN10217-7; 304/304L/316L; select applicable standard and grade
- Sanitary tube alternatives
- ASTM A270 / EN10357 / DIN11850; 304 / 304L / 316L; select applicable standard and grade
- Confirm before order
- Material grade, wall thickness, pressure/temperature rating — TBC
Confirm configuration, price, quantity and lead time for each enquiry.
Pipe dimensions and nominal wall series
| NPS | OD (in) | OD (mm) | Sch5S (in) | Sch5S（mm） | Sch10S (in) | Sch10S（mm） | Sch40¹ (in) | Sch40¹（mm） | Sch80¹ (in) | Sch80¹（mm） |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 0.405 | 10.29 | ... | ... | 0.049 | 1.24 | 0.068 | 1.73 | 0.095 | 2.41 |
| 1/4 | 0.540 | 13.72 | ... | ... | 0.065 | 1.65 | 0.088 | 2.24 | 0.119 | 3.02 |
| 3/8 | 0.675 | 17.15 | ... | ... | 0.065 | 1.65 | 0.091 | 2.31 | 0.126 | 3.20 |
| 1/2 | 0.840 | 21.34 | 0.065 | 1.65 | 0.083 | 2.11 | 0.109 | 2.77 | 0.147 | 3.73 |
| 3/4 | 1.050 | 26.67 | 0.065 | 1.65 | 0.083 | 2.11 | 0.113 | 2.87 | 0.154 | 3.91 |
| 1.0 | 1.315 | 33.40 | 0.065 | 1.65 | 0.109 | 2.77 | 0.133 | 3.38 | 0.179 | 4.55 |
| 1 1/4 | 1.660 | 42.16 | 0.065 | 1.65 | 0.109 | 2.77 | 0.140 | 3.56 | 0.191 | 4.85 |
| 1 1/2 | 1.900 | 48.26 | 0.065 | 1.65 | 0.109 | 2.77 | 0.145 | 3.68 | 0.200 | 5.08 |
| 2 | 2.375 | 60.33 | 0.065 | 1.65 | 0.109 | 2.77 | 0.154 | 3.91 | 0.218 | 5.54 |
| 2 1/2 | 2.875 | 73.03 | 0.083 | 2.11 | 0.120 | 3.05 | 0.203 | 5.16 | 0.276 | 7.01 |
| 3 | 3.500 | 88.90 | 0.083 | 2.11 | 0.120 | 3.05 | 0.216 | 5.49 | 0.300 | 7.62 |
| 3 1/2 | 4.000 | 101.60 | 0.083 | 2.11 | 0.120 | 3.05 | 0.226 | 5.74 | 0.318 | 8.08 |
| 4 | 4.500 | 114.30 | 0.083 | 2.11 | 0.120 | 3.05 | 0.237 | 6.02 | 0.337 | 8.56 |
| 5 | 5.563 | 141.30 | 0.109 | 2.77 | 0.134 | 3.40 | 0.258 | 6.55 | 0.375 | 9.52 |
| 6 | 6.625 | 168.28 | 0.109 | 2.77 | 0.134 | 3.40 | 0.280 | 7.11 | 0.432 | 10.97 |
| 8 | 8.625 | 219.08 | 0.109 | 2.77 | 0.148 | 3.76 | 0.322 | 8.18 | 0.500 | 12.70 |
| 10 | 10.750 | 273.05 | 0.134 | 3.40 | 0.165 | 4.19 | 0.365 | 9.27 | 0.500B | 12.70B |
| 12 | 12.750 | 323.85 | 0.156 | 3.96 | 0.180 | 4.57 | 0.375B | 9.52B | 0.500B | 12.70B |
| 14 | 14.000 | 355.60 | 0.156 | 3.96 | 0.188B | 4.78B | ... | ... | ... | ... |
| 16 | 16.000 | 406.40 | 0.165 | 4.19 | 0.188B | 4.78B | ... | ... | ... | ... |
| 18 | 18.000 | 457.20 | 0.165 | 4.19 | 0.188B | 4.78B | ... | ... | ... | ... |
| 20 | 20.000 | 508.00 | 0.188 | 4.78 | 0.218B | 5.54B | ... | ... | ... | ... |
| 22 | 22.000 | 558.80 | 0.188 | 4.78 | 0.218B | 5.54B | ... | ... | ... | ... |
| 24 | 24.000 | 609.60 | 0.218 | 5.54 | 0.250 | 6.35 | ... | ... | ... | ... |
| 30 | 30.000 | 762.00 | 0.250 | 6.35 | 0.312 | 7.92 | ... | ... | ... | ... |
Nominal/average wall thickness, not measured wall. A: Sch5S and Sch10S are not suitable for threading to ANSI B1.20.1. B-marked values differ from ANSI B36.10–1979. ¹ Source labels the last groups Sch40 and Sch80, but B-marked values follow a different stainless wall series; confirm the selected dimensional standard and edition. Ellipses mean no source value. The source feature range is OD6–630 mm / wall0.8–25 mm, while this reference table extends to OD762 mm; larger supply is TBC.
Specifications compiled from available product documents。Dimensions, performance and suitability are subject to confirmed drawings and ordering documents.
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