| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a steel sheet pile manufacturing method for manufacturing a steel sheet pile different in a cross sectional performance from the prior art, without introducing new equipment such as a pore type roll and changing a cross sectional shape.SOLUTION: A steel sheet pile manufacturing method comprises a rough rolling step, an intermediate rolling step and a finish rolling step for rolling an object material. The pressing process is performed by fluctuating the roll clearance of upper and lower hole type rolls constituting an intermediate roller for performing the intermediate rolling step and the rolling clearance of upper and lower hole type rolls constituting a finish roller for performing the finish rolling step, by a predetermined quantity.</p> |
