Pp-r pipe with general plastic light weight, corrosion resistance, scaling and long service life ... .Pp-r pipe what features?Pp-r pipe in general plastic light weight, corrosion resistance, scaling and long service life ... life can reach more than 50 years, Under normal temperature (20 ° c) use life can reach 100 years.5, installation ... thickness.Update Date:2010/6/10 2:42:29 valve stop valve ball valve