This specification covers straight seam or spiral seam electric-fusion-welded, light-wall, austenitic chromium-nickel alloy steel pipe for corrosive or high-temperature service. The sizes covered are NPS 14 to 30 with extra light (Schedule 5S) and light (Schedule 10S) wall thicknesses. Pipe having other dimensions may be furnished provided such pipe.Optional supplementary requirements are provided. These call for additional tests to be made, and when desired shall be stated in the order, together with the number of such tests required.
| Grades | UNS Designation |
|---|---|
| TP201 | S20100 |
| TP201LN | S20153 |
| TP304 | S30400 |
| TP304L | S30403 |
| TP309Cb | S30940 |
| TP309S | S30908 |
| TP310Cb | S31040 |
| TP310S | S31008 |
| TP316 | S31600 |
| TP316L | S31603 |
| TP317 | S31700 |
| - | S31727 |
| - | S32053 |
| TP321 | S32100 |
| TP347 | S34700 |
| TP348 | S34800 |
| - | S31254 |
| - | S30815 |
| - | S31725 |
| - | S31726 |
| - | S34565 |
| - | S20400 |
| - | N08367 |