Product Description Wear resistance and Anti-corrosion Screw and barrel Characteristics Alloy Hardening Base material Abrasion resistance Fe+Ni+Cr+B 58-64 45/40Cr Anti-corrosion Ni+Cr+Co+B 50-58 45/40Cr Abrasion resistance and Anti-corrosion Ni+Cr+Co+Fe+B 56-64 45/40Cr High Abrasion resistance and Anti-corrosion Ni+Cr+Wc+Co+B 58-67 45/40Cr Products Specification: Item type of…
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