Extruder gear pump is used on extruder for transporting and metering high temperature and viscosity polymer melt ; at the same time, increase and stabilize the pressure of material from extruder then transport to die. Its capacity of stabilizing and metering kinds of plastics is better than kinds of extrusion. Melt pump also called metering pump, extrusion pump, gear pump, it is widely used in extrusion molding in plastic, resin, rubber industry. Now granulation, film, pipe, plate, sheet, and other industries; melt pump is the essential part of extrusion equipment, applied in PP, PS, PET, PVC, ABS, PE, PA, rubber, and etc.