Steel wire coil 1.Diameter range:0.2-13mm 2.Main application:making spring,mattress,wire rope. 3.Standard:GB4357,DIN17223 StainlessSteel wires ... / High carbon Nickel steel wire , steel coil1. Main application: making spring,mattress,wire rope. 2. Have good tensile strength and elongation ... anytime.Life is what we make it! Steel Wires, Steel Coil