... screw barrel 1.Materials:38CrMoAIA,42CrMo,SKD61 2.Application:PVC,PE,PP 3.Depth of nitration case:0.5-0.8mm4 ... Screw Barrel Diameter 45/90-92/188mm Min. Order 1 set Materials 38CrMoAlA(JIS SACM645)42CrMo(JIS ACM440)SKD61 Discount Available ... Application PVC PE PP… Payment Term T/T , L/C Heat-TreatmentNitridedor BimetallicHardness ...