... 2.Material: 38CrMoAlA; SKD61; SKD11.etc. screw barrel for plastic injection molding machine We ,Lucheng screw Machinery Factory, is one of the ... ; 40Cr; 42CrMo; high quality alloy steelTechnology: nitriding treatment, alloy coating spraying, heat-treatmentAppliance: PVC, PP, PE, PA, PC, ABS, AS ... Reference Pictures of Screw Barrel : PE PP PVC ABS PS plastic injection molding machine screw and barrel