给水排水工程管道常用的管材有钢管、铸铁管、钢筋混凝土管、混凝土管和塑料管。由于钢管具有强度高,连接可靠,施工方便等优点,目前被广泛应用。但是,钢管的防腐问题,仍是设计和施工过程中需重点考虑的问题。防腐性能的好与否,直接关系到钢管的质量和寿命,因此,在设计和施工时,只有选用防腐性能好、防腐质量高、价格低廉、无毒的防腐材料,才能使钢管得到更合理的应 Water supply and drainage pipe commonly used in pipe pipe, cast iron pipe, reinforced concrete pipe, concrete pipe and plastic pipe. Due to the advantages of high strength, reliable connection and convenient construction, the steel pipe is widely used. However, the corrosion of steel pipe is still the key consideration in the design and construction process. Corrosion resistance is good or not, is directly related to the quality and life of steel pipe, therefore, in the design and construction, only the selection of anti-corrosion performance, high quality anti-corrosion, low cost, non-toxic anti-corrosion materials, to make the pipe more reasonable should