STEEL PIPE SHEET PILE, STEEL PIPE SHEET PILE PRODUCTION METHOD, AND STEEL PIPE SHEET PILE PRODUCTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To improve flatness of an end surface of a steel pipe sheet pile while keeping labor and a cost at a low level.SOLUTION: In a steel pipe sheet pile, a joint 3 to an adjacent pipe is welded along a longitudinal direction to an outer peripheral surface of a steel pipe 1. A heated part E heated in the state of causing shrinkage by plastic strain of compression is provided along the longitudinal direction of the steel pipe 1, in a peripheral range Lb, in which the joint 3 is not provided, of the entire perimeter of the steel pipe 1.