Gentle molding design guarantees the quality of the matter. Very much dependable valid design theory guaranteed the dependable operation of extruding. The special big torque drive system, gear tooth and shaft are high intensity alloy steel, and are treated by the cementite and tooth grinding. The fresh development screw may be applicable to the dispensation having great amount stuff runs distributing of material in screw; Screw with core temperature regulation unit and well barrel cool guarantee the exact control of technology temperature of material. Matching with different standard of pipe die and auxiliary device, it is used to extrude different pipe, plate, profile and soft and rigid PVC granulation.