... ,63 3.Cert.:ISO9001,CE 4.OEM service Aluminum-plastic PP-R composite pipe1.Material:PPR,AL2.Size:20,25,32,40 ... : 1. Hot water and cold water pipe for production and domestic use .2. Heating pipe , pipe used for heating installation on filoor and ... wall , snowmelting deveices for bulding3. Pipe used for solar enery water heater4. Coal gas and natural ...