PIPE
| Roll Grade | Plug Rolling Mills  |
Stretch Reducing Mills  |
Sizing Rolling Mills |
|---|---|---|---|
| P N / P CN | – | 50–60 | 60–66 |
| P H N / P H CN | 45–65 | – | 50–60 |
| PMo H N / PMo H CN | 45–65 | – | – |
| Ac H N / Ac H CN | – | 55–65 | 60–70 |
| GS H / GS H C | 40–60 | – | – |
| HS H C | – | 60–75 | 65–75 |