... GCr15 ,8620HSUP7,SUP9,SUP9A,SUP10,SUP11,SUP12 cold rolled round bar1. cold rolled ordinary carbon round bar Size: 10mm- ... 38CrSi, 30CrMnSi, 20CrMnTi, 9CrSi, 9Mn2 5. cold rolled high speed alloy tool steel Size: 12mm-300mmMaterial: W18Cr4V, M42,W6, ... 250mmMaterial: 60Si2Mn, 65Mn, 50CrVA, 60Si2CrVA 7. cold rolled die steel, bearing steel, carbon tool steel Size: 12mm-250mmMaterial: H13, T8, T9, ...