以往,在电气设计中常采用钢管、薄铁管作为动力照明线路保护管。为节省钢材、降低成本,近些年来,在民用建筑的照明设计部分,逐步采用半硬塑料管来代替钢管,而将塑料波纹管用于钢筋混凝土高层建筑中,在国内尚不多见,在电气工程人员中,对其运用的可能性和优越性尚有两种不同看法,根据本人施工实践感到:塑料波纹管用 In the past, steel pipes and thin iron pipes were often used as power protection circuit protection pipes in electrical design. In order to save steel and reduce costs, in recent years, in the lighting design part of civil buildings, semi-rigid plastic pipes have gradually been used instead of steel pipes. However, plastic corrugated pipes are used in reinforced concrete high-rise buildings and are still rare in China. Among the engineering staff, there are two different views on the possibility and superiority of their use. According to their construction practice, they feel that: