In addition to the wall thickness， we can also distinguish from the color marking on the outer wall of PPR pipe. Color marking is also called coextrusion. The PPR hot water pipe is marked with red color marking，PVC排水管电话， the PPR cold water pipe is marked with blue color marking， and there are also manufacturers who do not need any color marking for PPR cold water pipe.
根据耐腐蚀性能来参考?
具体来说，PPR管材耐腐蚀与防结垢性能则施工项目管道的基本需求，优良的PPR管材的耐化学腐蚀性能更好，其能够抵抗水中的化学元素的腐蚀，与此同时，其表面则可避免水垢的形成，以此可以促使输送的水更加洁净与卫生。
According to the corrosion resistance
Specifically，PVC排水管，Corrosion resistance and anti scaling performance of PPR pipe are the basic requirements of building project pipeline. Excellent PPR pipe has better chemical corrosion resistance， which can resist the corrosion of chemical elements in water. At the same time， its surface can ***oid the formation of scale， which can promote the tran***ission of water more clean and sanitary.
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