Screw Conveyors, though similar in appearance to screws, perform different functions. While screws are used as plasticizing elements, these ones act as feeders, transporting materials from one point to another. Material can be homogeneous, regrind, or recycled, destined for the extrusion lines. Depending on the material to be handled, screw pumps can have a cylindrical or conical external diameter.

To improve durability and resistance, screw pumps are often made of nitriding steels, a type of steel subjected to treatments to increase hardness and wear resistance. Some screw pumps may also have wear-resistant overlays to further strengthen their structure.

These characteristics make screw pumps crucial elements in the extrusion process, ensuring a continuous and uniform flow of materials and significantly contributing to the efficiency of the entire system.