... 51/105, 55/110, 55/120,58/124, 60/125, 65/120, 65/132, 68/143, 70 ... ingredients. Extruder screw design for 65/132 conical double screw barrelMaterial: 38CrMoAlA; SKD61; SKD11; 40Cr; 42CrMo ... type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type ... etc. Extruder screw design for 65/132 conical double screw barrelscope of application : PVCwood-plastic., PE ...