PP-R water supply pipes good heat resistance, long usage, good decay resistance, Recycling, good heat-conducting property PP-R water supply pipeApplyment1. Civil and ... coefficient of friction is far smaller than metal material.7. Solid pipe connector: because PP-R has good ability to melt ... 100 0C), so the connector and pipe are connected very solid, no leakage anymore.8. Able to recycle: It would ...