... Bimetallic KMD-50KK Screw Barrel For Plastic MachineFor good plasticizing effect,we have different designs of Bimetallic Twin screw and barrel for plastic extruder machine to meet ... 0.8~2.0mm Alloy hardness HRC56°~65° Alloy iron,nickel,tungsten,molybdenum Types of screw Gradual type,mutant type,wave type ... /105-120,55/110-125,58/125,60/125-129,65/120-132,68/147,70/150,74/156-162,80 ...