Pp-r pipe with general plastic light weight, corrosion resistance, scaling and long service life Pp-r pipePp-r pipe and tube type, ... copolymerization, injection pipe fittings become.Pp-r pipe what features?Pp-r pipe in general plastic light weight, corrosion resistance, scaling and ... the following features:1, non-toxic and health. Pp-r materials molecules only carbon, hydrogen, no harmful elements of ...