PE-AL-PE Composite pipe Material: -Outer and inner layer: Korean SK DX 800 & American DOWLEX 2388e PE -Middle layer:aluminum -Adhesive combined All the layers are extruded in the same time one step. Usage: Cold water distribution, gas supply. Maximum thermal temperature: 60 Degree Celsius Size range(mm):1216,1418,1620, 2025,2632 in demension Speciality: The PE-AL-PE composite pipe we supply combines the strength of metal with the safty and performance of plastic, easy to bend but not spring back, has a long working life of 50 years. Please contact us if you need it . Thank you!