Hard polyethylene water supply pipe, as a mature water supply pipe, has acid resistance, alkali resistance, strong corrosion resistance and good pressure resistance. Besides, it also has good features such as high strength, light weight, low price, small flow resistance, no secondary pollution, compound sanitary requirements, convenient construction and operation etc. Standard GB/T10002.1-2006 and GB / T10002.2-2003, GB/T17219-1998. Application: Civil and industrial building flood, water supply system in residential, urban water supply pipeline system, marine aquaculture.