PP-R pipe is short for polypropylene tubes, with light weight, corrosion resistance, not fouling, long service life, etc The PP-R pipe officially named the no ... is passed. However it doesn’t mean that PPR pipe is perfect. For instance, it is poor at pressure and high ... of cold water pipe Pipe diameter of PPR pipe is from 16mm to 160mm,and 20mm,25mm is popular among the home decoration PP-R Pipe