| 摘要 |
PURPOSE: A construction method of steel pipes is provided to smoothly construct the steel pipes and to minimize the construction time by adjusting the ends of the neighboring steel pipes while holding tightly after arranging, facing or inserting the ends of the steel pipes and welding the insides of the steel pipes or welding the joint portion of the steel pipes. CONSTITUTION: Neighboring steel pipes(P) are arranged in a straight line by closing maximally. Forming devices are installed in the outer ends of the neighboring steel pipes respectively. The forming devices pressurizes the steel pipes from the outer faces toward the centers. The end circumferences of the steel pipes are faced each other or inserted into a socket(PS) while maintaining the steel pipes in a straight line. The inner or outer joint portion of the steel pipes are welded. Thereby, the industrial accidents are prevented. |
