| 摘要 |
PROBLEM TO BE SOLVED: To economically manufacture a high-quality U-shaped sheet pile by stably executing intermediate rolling respectively keeping extension balance of the web and flanges. SOLUTION: This method is a rolling method of shape steel by which the intermediate rolling consisting of three or more rolling process is executed to the intermediate rolled stock 1' using a pair of horizontal rolls 5, 6 having a caliber, two rolling process of the intermediate rolling are executed by reciprocating rolling including one reversing rolling and also at least one pass comprising the reciprocating rolling is executed by crossing respective roll axes (l), (m) of a pair of horizontal rolls 5, 6. |
