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Alloy 20Cb-3/NS143/N08020/2.4660 T 0.1-1.0mm W 4-250mm and Hv_240-280 Cold Rolled Coils Alloy 20Cb-3/NS143/N08020/2.4660 T 0.1-1.0mm W 4-250mm Hv_240-280 Surface 2B(Or customized) Similar Grades: GB/T ...