... Screw Barrel for LDPE film Diameter30mm-250mmMin.Order1 setMaterials38CrMoAIA42CrMo(JIS SCM440)9Cr18MoVCW6Mo5Cr4V2SKD11,61GH113Discount AvailableApplicationABS,PP,PA66,LCP,PC,EVA,PS,U ... polishingTechnological Parameter RoughnessRa 0.4umHardness of nitration950~1020HVDepth of Nitride Layer0.5~0.8mmFragility of nitrationLess than grade 2Alignment of Screw0.015mmPacking Wooden CasePort ...