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 ... as water supply pipes on home improvement projectsThe PPR pipe are completely integrated into each other by the hot- ... 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