EP-4647201-A4 - MANDREL EQUIPPED WITH IMPEDER DEVICE, ELECTRIC RESISTANCE WELDED TUBE MANUFACTURING DEVICE, AND MANUFACTURING METHOD OF ELECTRIC RESISTANCE WELDED TUBE
EP4647201A4EP 4647201 A4EP4647201 A4EP 4647201A4EP-4647201-A4
Inventors
- HIROTA YOSHIAKI
- TANIMOTO MICHITOSHI
- IMANISHI AKIRA
Assignees
- NIPPON STEEL CORP
Dates
- Publication Date
- 20260506
- Application Date
- 20231225
- Priority Date
- 20230316