在工作中我们发现 ,车间里有一直径为5 0的水管向外渗漏 ,经检查后得知 ,在水管上有一砂眼 ,直径约为 0 .3毫米。由于该水管高于地面 3米 ,距墙 10 0毫米且砂眼方向倾向于墙壁 ,若用焊接的方法就地进行补焊 ,则因空间太小 ,无法进行。只有将水管卸下来 ,方可在地面进行焊接。 During the work, we found that a pipe with a diameter of 50 in the workshop had leaked outwards. After inspection, it was found that there was a blister on the pipe with a diameter of about 0.3 mm. Since the water pipe is 3 meters above the ground, 10 mm from the wall and the direction of the trachoma is inclined to the wall, welding can not be performed if the welding is performed locally. Only by removing the water pipe can be welded on the ground.