The provided NRV for Screw is presumably the most recognized sort of extruder utilized in the production of profile lengths or of aggravating polymers where additives or fillers are presented. Its key benefit is a generally minimal cost, direct structure, roughness, and good execution/cost proportion. This is basically a intended to run with profoundly gooey liquids, for example, polymeric melts. The standard NRV for Screw with a pitch like the diameter, giving a long slim system in which considerable longitudinal temperature slopes can be kept up and controlled.