... Pp-r pipePp-r pipe and tube type, using polypropylene is become by extrusion of polypropylene copolymerization, injection pipe fittings become.Pp-r pipe what features?Pp-r pipe in general plastic ... and reliable, not only for hot and cold water pipe, also can be used for pure water system.2, heat insulating and energy-saving. Pp-r pipe ... quality of products.Pp-r pipe main USES what?1, building of hot and ...