Specefication: The dia of the pipe from10mm-75mm(overlap);10mm-32mm(butt-welded). We can supply the products according to buyers demand. Features: pure polyethylene of inwall & outwall, non-reclaimed materials, non-toxicity, anti-acid, anti-alkali, anti-salt and corrosion proof; non-scaliness, non-microorganism; non-gas infiltration of middle aluminum. Welding: Advanced technical argon-arc welding, glossy welding line, even pipe wall, non-breakage of aluminum plastic jointing point or pipe after 30% reaming and unrivalled airtightness. Convenient Transportation: It can be roll packaging with its light weight. Easy handling: Spot incision, free bending, non-rebound, non-distortion and easy installment kit. It can be connected with brass fittings without pressing screw thread. Safety: It is employed with thick aluminum structure, which ensure temperature proof &withstand voltage of pipeline. It features non-leakage, tensile, resist compression, strong portrait heat-sinking capability and good flame retardant. Durability: It has life of 50 years. Withstand pressure, high temperature proof, anti-low temperature temperature resistant capacity(-40~95),withstand pressure degree 1MPa Application: * Hot or cold flow pipe, central air-condition cannula, * Pipeline for gas, oil, natural gas * Wires & cables * Solar heating, cooling and cleansing setting tubes * Agricultural & irrigative project tubes * Cooling fluid ductus for hospital & factory * Fluid ducting for chemical factory * Fluid ducting for beverage factory * Compressing air & oxygen duct * Flue, warming setting on wall or floor.