Butt welding Aluminum-plastic composite pipe DXPAP2

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They are composed of an inner and outer layer of PE-Xb, which are bonded by special glue to the intermediate layer of aluminum. ASTMF1335-1998 standard called them” metal pipes with plastic protective layer”. Cross linking PE layer Adhesive layer Butt-welding Aluminum layer Adhesive layer Cross linking PE layer Features 1. Good quality in pressure resistance and heat resistance The highest working temperature can be 98°C，and working pressure up to 1.25Mpa. 2.Pressure-time curves，assure long usage time security 3. High bursting pressure makes secure system 4. Good quality in oxygen obstruct 5. Low thermal conductivity 6. Convenient installation, leakage effectively prevented 7. Junxing plays a leading role in pipe industry, we’re sure to provide products with professional quality. Specifications Unit: mm Nominal outside diameter Outside diameter tolerance Inside diameter for reference Circularity Thickness of pipe wall Thickness of Inner PE layer Thickness of Outer PE layer Thickness of AL layer Coil pipe Straight pipe Minimum Tolerance 16 +0.30 12.1 ≤1.0 ≤0.5 1.7 +0.50 0.9 0.40 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 Physical Mechanics Feathers Item technical requirements coefficient of thermal conductivity W/m.k 0.45 coefficient of thermal expansion M/m.k 2.5×10-5 bend radius D: diameter ≥5D working temperature °C -40~+98 working pressure Mpa 1.25 radical pulling force N 2300~2650 burst strength Mpa 4.0~6.0 Comparison between DXPAP2 and Overlapping Welding Pipe DXPAP2 pipe’s aluminum layer is thicker than overlapping welding pipe. The GTAW welding method makes pipe stronger and the pipe system safer. Item DXPAP2 overlapping welding pipe Long time working temperature 98°C 82°C Permit working pressure 1.25Mpa 0.86Mpa Technical Requirements 1. Standard Q/12WQ4978-2009 2. Color: white 3. Specification: coil pipe: dn16-dn32 length: 100m or 200m/coil Straight pipe: dn16-dn32 4m/p Customized specification also available. Applications 1. Hot water heat supply system 2. Domestic boiler pipe for heat supply and water supply 3.Bathing water supply system (solar water heater，electric heater，etc) 4.Transportation for low pressure liquid of civil use(hot and cold water， drinking water， air-condition，firefighting and fuel gas).

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Junxing Pipe Industry Group

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