... machine,rubber processing machine,other plastic rubber machine conical¶llel twin screw barrel for rubber &plastic machine Product name:injection / extruder machine/ ... screw barrel,extruder screw barrel,screw barrel for injection molding machine,conical or parallel screw barrel,Material:38CrMoAlA, ... HRC55-72 Depth of Bimetallic Layer: >2mm Used for granulation,PE,PP,PA,PC,ABS,AS,etcWe supply ...