| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carbon dioxide gas-shielded arc welding method of a steel pipe pile as the welding method of the steel pipe pile at an execution site of a steel pipe, wherein the welding time is shortened, and weld defects are reduced. <P>SOLUTION: In the welding method of a steel pipe pile in which the steel pipe piles arranged in the vertical direction in an execution site of the steel pipe piles are welded to each other by the carbon dioxide gas-shielded arc welding method, the groove shape is a single bevel shape in which the root face is ≤3 mm, the groove angle is 25-35°, and the root gap is ≤1 mm. Further, the ratio of the shield gas flow rate to the inside diameter of a nozzle is 6-12L/min mm<SP POS="POST">2</SP>, and the welding current is 350-450A. <P>COPYRIGHT: (C)2013,JPO&INPIT |
