PP pipe introduced by PP fitting wholesaler has the characteristics of high temperature resistance, convenient pipe... morePP pipe introduced by PP fitting wholesaler has the characteristics of high temperature resistance, convenient pipe connection (heat welding, electric welding, pipe connection), and acceptable use. It is mainly used in farmland water delivery system, building water supply system, heating system and chemical pipeline system. According to pp pipe polymerization process conditions, it can be divided into homopolypropylene (PP-H), block copolymer polypropylene (PP-B) and random copolymer polypropylene (PP-R). Because the brittleness of PP-H pipes at low temperatures restricts its application, it has been gradually replaced by PP-B pipes and PP-R pipes in some applications. Among them, PP-B pipes are mainly used in cold water systems and above-ground heating systems, while PP-R pipes are more widely used. In addition to the simple characteristics of plastic pipes, PP-B and PP-R pipes also have the following characteristics: superior cleaning function, heat resistance, heat preservation and energy saving, convenient installation, reliable connection, materials that can be accepted and used, simple equipment requirements, and production technology Concise and easy to control, the pipeline layout is free. Since my country issued a decree in 2000 to prevent the use of galvanized pipes as water supply pipes in newly built houses, polypropylene pipes and polyethylene pipes have been greatly opened. less