Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203794 | Method for manufacturing bainite high-strength seamless steel tube, and bainite high-strength seamless steel tube | Zhonghua Zhang, Xiaobo Wang | 2021-12-21 |
| 11015232 | Seamless steel tube with high strength and toughness and manufacturing method therefor | Zhonghua Zhang | 2021-05-25 |