产品分类 Product classification 给水管按材质和结构分三大类，包含纯金属材质的金属管，纯热塑性塑料材质的塑料管及金属材质与热塑性塑料双材质生产复合结构型的复合管材。 Feed pipe is divided into three major categories, according to the material and structure contains pure metal tube, pure thermoplastic material of plastic pipe and metal materials and thermoplastic plastic material in the production of composite structural composite pipe. 金属管 Metal tube 金属管以金属为原料生产的金属给水管，包含紫铜管、不锈钢管、钢管。其金属的支撑能力比较突出，但是其的缺点是水对金属有腐蚀作用。早期腐蚀性严重的金属管有镀锌等，因其对水源的破坏，已被国家禁用。 Metal pipes are made of metal, including copper tubes, stainless steel tubes and steel pipes. Its metal support capability is outstanding, but its disadvantage is that water is corrosive to metals. The early corrosive metal pipes have been galvanized, which have been banned by the state because of their damage to the water source. 塑料管 Plastic pipe 塑料管最常用的是PPR水管、安全、无毒、安装方便、价格低廉等特质，成为家装最常用的水管。但是由于其是塑料不能起到很好的支撑作用和环境荷尔蒙等问题，开始使用金属内衬ppr复合管材作为给水管道。 The most commonly used plastic pipe is the PPR water pipe, safe, non-toxic, convenient installation, low price, etc., it is the most commonly used water pipe in the home. However, due to the fact that the plastic cannot provide a good supporting role and environmental hormone, the metal lining PPR composite pipe is used as the water supply pipe. 复合管材 Composite pipe 复合管材包括 铝塑复合管、铝合金衬塑复合管、不锈钢衬塑复合管材。其中作为小管径的铝塑复合管替代了部分家装末端，由于其热胀冷缩问题，已经被逐渐淘汰。 Composite pipe material includes aluminum - plastic compound tube, aluminum alloy liner composite pipe, stainless steel liner plastic composite pipe. Among them, the aluminum - plastic composite tube, as a small pipe diameter, has replaced the end of the home decoration, which has been gradually eliminated due to its thermal expansion and shrinkage problem.