PP- R(Poly  Propylene Random) has no rules namely to gather the polyprop-ylene totally, is the new pipe line material of widespread adoption in flourishing nation nowadays, it adopts to connect the technique with the quality  in cold hot water transport engineering, it synthesizes the technique function and economic index signs far and far and better than other of the same kind products, particularly its outstanding health function, use to abandon to recover the whole processeses and can attain the very high hygiene, the environmental protection request from the production  The product have heat-proof, bear to press, the heat preservation economy energy, service life is long and economy etc. advantage, will take gradually substitute existing other pipe line but become the predominant product.