... price 5.APP:PE,PP,PVC,PET,etc. The screw diameter Φ62.4 mm, L/D=40 1, ... bricks principle. The material of screw core axle is 40 CrNiMoA, the material of screw element adopted high speed tool ... 6WMO5Cr4V2, with high temperature vacuum quenching heat treatment. The screw element and core axle is connected by involute structure with ... 550D60016012008.5500~850 SHJ series co-rotating twin screw extruder