PE-AL-PE composite pipes core consists of aluminum with an inner and outer plastic layer, it is tightly bonded with a special adhesive to the aluminum core and all the layers are extruded in one step. PAP has not only high pressure resistance like the metal pipe, but also high corrosion resistance like the plastic pipe.

Thermal conductivity              0.45W/(m.k)

Coefficient of thermal expansion   0.025mm/(m.k)

Bend radius              ≥5D (D means outside diameter)

Working temperature      -40°C -- 95°C

Oxygen-permeability      0

Inside of the pipe        smooth and small resistance to liquids, its roughness coefficient is 0.0004mm

Other                  excellent property of static-shield and long lifespan
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