... 2.Material: 38CrMoAlA; SKD61; SKD11.etc. screw barrel for plastic injection molding machine We ,Lucheng screw Machinery Factory, is one of the ... type, mutant, PM separation type, shunt type, barrier type, the vacuum exhaust type, combined type, work type, speed type, etc.," ... alloy coating spraying, heat-treatmentAppliance: PVC, PP, PE, PA, PC, ABS, AS etcDepth of Nitrated Layer: 0.5-0.8mmHardness of ...