With many years of design, manufacturing experience and adopting international advanced technology, our company has developed different series of extruder on base of accepting the users, suggestion. the special high-efficiency venting screws of different structures (such as separate type, mixing head, barrier type, distribution type, and other combinations) are selected for this series of machine, which has excellent venting performance, good plasticization. It is suitable for PP, PE, HIPS, PS, ABS, PMMA, PA, and other engineering plastic. It is especially suitable for processing the reclaimed material so as to reduce the cost of product greatly. DUAL DIAMETER (145 mm-110 mm) design with a large diameter feed transitioning down to the smaller diameter main processing section. The flights are hard surfaced with Gas Nitriding with hardness from 65 HRC -68 HRC.