Steel Round BarChina 65mn Cold Rolled Hardened and Tempered Spring Steel Strip/Coil/Sheet/Plate 65mn, Sk85, 51CRV4, C45, C50, C75, Find details about China Spring Steel Strips, Spring Carabiner Swivel Stainless Steel from 65mn Cold Rolled Hardened and Tempered Spring Steel Strip/Coil/Sheet/Plate 65mn, Sk85, 51CRV4, C45, C50, C75