Plastic-aluminum stable pipe is of PP-R pipe whose surface is covered by high-strength which makes the pipe wholly isolated from the exterior air therefore keep the water in pipe restrain the growth of alga. The pipe expansion ratio is small and suitable to be installed or beside installation of outdoor cool-hot water .The pipe appearance is so elegant ,the characteristics are as follows: non-distortion, non-color change, non-aging, anti-ultraviolet radiation and anti-oxidation. The pipe is extensively used on medicinal water, northern water-hearting system, high-temperature hearting such as air heating . Pressure level: Specifications thickness(mm) PN1.6Mpa20?.3 25?.8 32?.6 40?.5 50?.6 63?.1 75?.4 Pressure level: Specifications*Thickness(mm) PN2.0Mpa20?.8 25?.5 32?.4 40?.5 50?.9 63?.6 75?0.3 Pressure level: Specifications thickness(mm) PN2.5Mpa20?.4 25?.2 32?.4 40?.7 50?.3 63?0.5 75?2.3