Zhoushan Factory Custom PVC Bimetallic Conical Twin Barrel and Screw for Plastic Extruder Machine
Products are of high quality materiala alloy steel 38CrMoAl,quenched,fo spray two-alloy),reinding, and other refining process,so that our products have good wear and corrosion resitance or loner service life and so is the preduct of choice to replace screw.