Butt welding Aluminum-plastic composite pipe RDPAP7

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Butt welding Aluminum-plastic composite pipe RDPAP7
Posting date : Aug 01, 2012
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39-
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Butt welding Aluminum-plastic composite pipe RDPAP7 They are composed of an inner and outer layer of PE-RT, which are bonded by special glue to the intermediate layer of aluminum. ASTMF1335-1998 standard called them” metal pipes with plastic protective layer”. Advantages: 1.Heat resistant: The highest work temperature is 95°C, working pressure is 1.25MPa. 2.Longevity: more than 50 years under normal condition 3.Antiknock: burst pressure can reach 6.0Mpa with safer system 4.Better Resistance performance of oxygen 5.Lower coefficient of heat conductivity: the lowest is 0.45W/m.k 6.Easy to install, no connectors Application: 1. Cold or hot water supply 2. Heating system including flooring heating and radiating system 3. Central air conditioning system 4. Industrial liquids transportation, etc Aluminum-plastic composite pipe RDPAP7 structure size table (unit mm) Nominal diameter(dn) Tolerance Diameter Roundness Aluminum wall thickness Tolerance Inner minimum thickness Outer minimum thickness Inner wall thickness Coil Straight 16 +0.30 12.1 ≤1.0 ≤0.5 1.7 +0.50 0.9 0.4 0.25 20 15.7 ≤1.2 ≤0.6 1.9 1.0 0.30 25 19.9 ≤1.5 ≤0.8 2.3 1.1 0.35 32 25.7 ≤2.0 ≤1.0 2.9 1.2 0.50 Aluminum-plastic composite pipe RDPAP7 mechanical properties table Coefficient of thermal conductivity 0.45W/(m.k) Thermal expansion coefficient 2.5× M(m.k) Bending radius ≥5D(D:Tube diameter) Working temperature range -40~+95°C Work pressure ≤1.25Mpa Penstock radial tension 2300~2650N Blasting strength 4.6~6.0Mpa

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