Adopting extrusion technology, and the final products of this line, which can endure pressure 0.4-2.5Mpa, are mainly used for the indoor water supply. Using heat-melting weld means for fittings, antisepsis and anticorrosive, so this kind of pipe is the new environment- protection water supplying products. PP-R special high-efficiency single screw extruder ensuring even and stable plasticization Bush structure for barrel feeding part Specially-designed spiral moulds for PPR High torsion gearbox, strong hardness and high smoothness gears. PLC controlling system for selection to improve the automatic control standard. High-precision temperature controller and particularly esigned air fans.