目前住宅公房的卫生设备都装有附墙铸铁下水管道。然而,管道渗漏水却是一个十分令人烦恼的事情。而且传统的修补方法又给房管部门带来许多不便。为了解决这个问题,我们在上海市闵行区红旗新村约二万平方米多层住宅的807个渗漏点上,用502胶掺铸铁粉修补,取得了很好的效果。 At present, sanitary equipment for residential public housing is equipped with wall cast iron sewer pipes. However, leaking water from the pipeline is a very disturbing thing. Moreover, the traditional repair method has brought a lot of inconvenience to the housekeeping department. In order to solve this problem, we repaired 807 plastic-filled cast iron powder in the leakage point of about 20,000 square meters of multi-storey houses in Hongqi New Village, Minhang District, Shanghai, and achieved good results.