Appearing on the market, there are three plastic composite pipe: 1, PE / AL / PE (outer layer of polyethylene); 2, PE / AL / PEX (crosslinked polyethylene inner layer, outer layer of polyethylene); 3 , PEX / AL / PEX (crosslinked polyethylene inner and outer layers are the central layer are aluminum layer).

Aluminum-plastic composite pipe has good insulation properties, corrosion inside and outside the wall is not easy, due to smooth inner wall, the fluid resistance is small; and because to bend, so easy installation and construction. As water pipes, aluminum plastic composite pipe has sufficient strength.

Al-loop coating Coating head die Static Al-plastic PP-R pipe Forming machine Two kind welding process: 1. ultrasonic lap seam welding, co-extrusion forming. 2. butt-joint argon-arc welding, welding seam close-gained and smooth. Controlling center adopting computer control system of Austria B&R company programmable computer. Long-distance closed loop control automatically the process of the speed of extruding and hauling, temperature and product diameter. Modle Diam. range of pipe Product speed （m/min) total install (kW) Overall dim. L×W×H(m） SJLS-30B φ16-φ32 6-20 185 53×5×2.5 SJLS-60B φ16-φ63 3-18 198 59×5×2.5