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硬聚氯乙烯塑料排水管(简称PVC排水管),与传统的铸铁管相比,不但具有质轻、外观美、不生锈、耐腐蚀、阻力小等特点,而且施工简便,可降低劳动强度。目前在国外,PVC排水管作为新型化学建材已得到广泛应用。上海市于1973年开始在住宅中试用PVC排水管,1979年以后迅速推广使用。1984年在200万平方米的住宅中安装使用,1985年扩展到在260万平方米的住宅中使用,在新建民用住宅中安装PVC排水管巳占50%。上海市推广使用PVC排水管以后,获得了良好的经济效益和社会效益。按上海地区住宅管道的设计测算,每平方米建筑面积减少铸铁用量3.2公斤。到1985年底,已在625万平方
Unplasticized PVC plastic drainage pipe (abbreviated as PVC drainage pipe), compared with the traditional cast iron pipe, not only has the characteristics of light weight, beautiful appearance, no rust, corrosion resistance, low resistance, etc., but also simple construction, can reduce labor intensity . At present, PVC drains have been widely used as new chemical building materials. Shanghai began trials of PVC drainage pipes in residential buildings in 1973, and it has been rapidly used since 1979. It was installed and used in 2 million square meters of houses in 1984, and expanded to 2.6 million square meters of houses in 1985. PVC drainage pipes were installed in newly built residential houses, accounting for 50%. After the promotion of PVC drainage pipes in Shanghai, it has achieved good economic and social benefits. According to the design of residential pipelines in Shanghai, 3.2 kg of cast iron are used per square meter of construction area. By the end of 1985, it had reached 6.25 million square feet.