Large diameter PPR pipe, multilayer PPR pipe, composite plastic pipe, High temperature PPR pipe, Metal plastic PPR AL PPR pipe Product Information: Product:High Temperature Large Diameter Metal Plastic Composite PipeMaterial:Middle Layer---Superior AluminumOut Layer---Hyosung PolypropyleneInner Layer---PERTBetween Layers---Welding AdhesivesProduct Description:With five layers structure, middle ...