... Material: 38CrMoAlA; SKD61; SKD11.etc. screw barrel for plastic injection molding machine We ,Lucheng screw Machinery Factory, is one of ... , PTFE, PR, UP, PEC, PF, VF, MP, PMMA, PET, PBT, PPS, MPPO, PI, LCP, etc.. Lucheng screw with ... 15g-25000gram Material: 38CrMoAlA; SKD61; SKD11; 40Cr; 42CrMo; high quality alloy steelTechnology: nitriding treatment, alloy coating spraying, heat-treatmentAppliance: ...