PP,PE,PVC,PET,ABS,PPR for Plastic Extruder Machine Conical Twin Screw and Barrel material: ... bimetallic layer PP,PE,PVC,PET,ABS,PPR for Plastic Extruder Machine Conical Twin Screw and Barrel Zhejiang ... Bohai Conical twin screw barrelDiameterΦ25/53,35/77,45/90,51/10,55/110,65 ...