This sets is suit for producing PP-R pipes. The PP-R pipe is a new-style green environment protection products which is characterized by sanitation, innocuity, rustlessness, no filth, endure high temperature and pressure , and with long-life. Furthermore, it has particular heat melt join technics, realized molecular combination, assure will not make water forever. It widely use in life clean drink water supply and hot water heating system, and is a upgrade product which replace copper tube and zincification steel tube.Make relevant change will produce PVC, PE, PP pipes