Machine flange PPR material 1.Pure pp-r material 2.Size(mm):20 to 160 3.Quickly ... instal,never leak 4.Long service life Machine flange PPR material Size(mm): 20,25,32,40,50,63,75 ... (3 style), is a new generation of green building material developed and produced in the 1990s.2. As light ... thermal endurance quality.3. It is genuine green building material in reality as well as name for its low coefficient ...