Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9266155 | Super large diameter longitudinal welded pipe forming machine set | Li Ma, Zhaokui Lang | 2016-02-23 |
| 9266161 | Production line of large diameter longitudinal welded pipe | Li Ma, Zhaokui Lang | 2016-02-23 |