... /124, 60/125, 65/120, 65/132, 68/143, 70/135,70/140, 75/150, 80/143, 80/156, 92/188, 95 ... be designed according to different products and ingredients. Extruder screw design for 65/132 conical double screw barrelMaterial: 38CrMoAlA; SKD61; SKD11; 40Cr ... type, three-head type, multi head type etc. Extruder screw design for 65/132 conical double screw barrelscope of application : PVCwood-plastic ...