| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a piping material for a pipe, a pipe joint, or the like facilitating bending and welding in need of angling and to efficiently establish a piping construction method by accurate bending and welding using the piping material. SOLUTION: In this piping construction method, when the pipe 1 provided with marking-off lines K1, K2, K3, K4 extended along a pipe axis and marked at the intervals of 90 deg. on the outer peripheral wall of an opening part 2 of the pipe l serving as the piping material is connected and welded, each pipe 1 to be connected is angled and welded by adjusting the marking-off lines K marked along the pipe axis, to the outer peripheral wall 3 of the opening part 2 of each pipe.</p> |
