PPR Al PPR composite pipe: 1.Working pressure:PN16/PN20/PN25 2.Outside ... 75/90/110mm 4.Sanitary PPR Al PPR composite pipePP-R aluminum plastic composite pipe is a composite pipe of five layers, inside and ... mainly supply PE pipe, PPR pipe, SRTP pipe, SRTP pipe, PE-RT pipe, HDPE pipe, UHMW PE pipe and supporting pipe fitting used for drainage, heating, water&gas supply pipeline system. Should any ...