... Under High Temperature and Pressure Key Specifications/Special Features:Aluminum composite pipe Material: PPR, aluminmum With five layers, inside and outside Tightly bonded ... are ISO9001 and ISO14001certificatedOur products include PEX-AL-PEX,PPR,PPR-AL-PPR,PEX,PERT,PE,...piping and fittings.Value: Quality, Trust ,Stable. PPR-AL-PPR pipe