分类
classification
给水管分金属管，复合管和塑料管。金属管主要分为紫铜管和不锈钢水管，金属管具有安全、卫生、耐用等诸多特点，是家装工装的最理想的水管。
Water supply pipes are divided into metal pipes, composite pipes and plastic pipes. Metal pipes are mainly divided into copper pipes and stainless steel pipes. Metal pipes have many characteristics such as safety, sanitation, durability and so on. They are ideal pipes for household fittings.
复合管典型代表有铝塑管，但是由于其热胀冷缩问题，已经被逐渐淘汰
Aluminum-plastic pipes are typical of composite pipes, but they have been gradually eliminated due to their thermal expansion and contraction problems.
塑料管最常用的是PPR水管，安全，无毒，安装方便，价格低廉等诸多原因，使其成为家装最常用的水管。但是由于环境荷尔蒙等问题，越来越多的人，开始使用金属管或者ppr内衬金属管作为给水管道。
The most commonly used plastic pipe is PPR pipe, which is safe, non-toxic, easy to install, low cost and many other reasons, making it the most commonly used pipe for home decoration. However, due to environmental hormones and other issues, more and more people begin to use metal pipes or ppr-lined metal pipes as water supply pipes.
给水管各项性能指标都比较严，特别是用在生活饮用水上面，需要管道具有无毒无辐射，不能含有重金属等有害物质，耐腐能力要好，使用寿命要长等要求。
The performance indicators of water supply pipes are relatively strict, especially for drinking water, which requires non-toxic and non-radiation pipes, can not contain harmful substances such as heavy metals, good corrosion resistance, long service life and other requirements.