| 摘要 |
Disclosed is a method for manufacturing a UOE steel pipe which determines whether the shapes of the bevels formed at the edge portions of the base steel plate of the UOE steel pipe by an edge planer are normal or not and speedily outputs to an operator the necessity to correct the shapes of the bevels, when necessary. A thick plate (7) with the bevels (8a, 8b) formed at the edge portions (7a, 7b) is sequentially subjected to C-press operation, U-press operation, and O-press operation, thereby obtaining an open pipe (13), and the bevels (8a, 8b) of the open pipe (13) are butt-welded, so that the UOE steel pipe (30) is manufactured. In manufacturing the UOE steel pipe (30), the shapes of the bevels (8a, 8b) of the thick plate (7) before being subjected to the C-press operation are measured by a bevel shape measuring device (6) and on the basis of the result of the measurement, the necessity to correct the shapes of the bevels (8a, 8b) of the thick plate (7) is determined before the C-press operation is started. |
