... Temperature and Pressure Key Specifications/Special Features:Aluminum composite pipe Material: PPR, aluminmum With five layers, inside ... PP-R material 100% oxygen tightness, very suitable for heating systems Improved resistant to impulse under low temperature, resistant ... are ISO9001 and ISO14001certificatedOur products include PEX-AL-PEX,PPR,PPR-AL-PPR,PEX,PERT,PE,...piping and fittings.Value: Quality ...