END FACE SHAPE OF PART TO BE WELDED IN BUTT-WELDING PIPES

摘要

PROBLEM TO BE SOLVED: To provide an end face shape of parts to be welded which can easily set and keep the gap to be as small as possible in a short time in achieving the butt-welding of pipes to each other. SOLUTION: In the end face shape of parts to be welded in welding pipes to each other, the pipes can be easily aligned by inclining end faces 3 and 4 of the parts to be butt-welded of upper and lower pipes 1 and 2 with respect to the axis of the pipes, and forming contact surfaces with each other to be conical.