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 barrelDiameterΦ25/53,35/77,45/90,51/10,55/110,65/120,65/132,70/ ... 140,75/150,80/156, 80/172,90/184 92/188.etcDesigning Screw structure and compressionratio can be ...