PLASTIC PIPE ,RPP PIPE, PVDF PIPE, PPH PIPE, CPVC PIPE, UPVC PIPE STANDARD:GB SIZE:DN15-DN500 PLASTIC PIPE , ... RPP PIPE, PVDF PIPE, PPH PIPE, CPVC PIPE, UPVC PIPE STANDARD:GBSIZE: DN15-DN500COLOR: GREY ,WHITELENGTH: 4 ... ,dyeing,foodstuff,environmental protection and pure water et pipes and fittings