PPR Pipe Extrusion Line/plastic pipe extrusion line/pipe production line Detailed Product DescriptionPP-R Features:Sanitary and nontoxic, ... , thermal conductivity is only 0.5% of metal pipe, low drag index;Easy melting connection by special tools ... water, oil, and corrosive liquid, etc. Used as condenser pipe in aircondition system; Agriculture irrigation; Heat supply system, water ...