| Application | Pretro Pipe |
|---|---|
| Grade | 10# 20# 12CrMo 15CrMo |
| Standard | GB 9948-2006 |
| Certification | Ф168～Ф720×4.5～50 |
WTK OD | ＞159 ～177.8 | ＞177.8 ～219 | ＞219 ～273 | ＞273 ～325 | ＞325 ～356 | ＞356 ～377 | ＞377 ～426 | ＞426 ～508 | ＞508 ～720 |
|---|---|---|---|---|---|---|---|---|---|
| ≥4.0～5.0 | 0 | 0 | 0 | 0 | 0 | ||||
| ＞5.0～7.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| ＞7.0～8.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| ＞8.0～10.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ＞10.5～13.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ＞13.0～20.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ＞20.0～25.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| ＞25.0～30.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
