| 摘要 |
Provided is a metal pipe manufacturing method capable of limiting hardening failures. The metal pipe manufacturing method of an embodiment corrects bends in a metal pipe using a straightening machine (10). Next, both pipe ends of the metal pipe in which bending has been corrected is cut using a pipe cutting device (20). Then, multiple metal pipes, both ends of which have been cut, are lined up in the axial direction, conveyed to a hardening device (30) and hardened by heating the metal pipes using induction heating and then cooling. |
