... range:0.2-13mm 2.Main application:making spring,mattress,wire rope. 3.Standard:GB4357,DIN17223,JIS G 3521 High Carbon Spring Steel ... Wire Performance:1.Diameter range:0.2-13mm2.Main application:making spring,mattress,wire rope.3 ... .Standard:GB4357,DIN17223,JIS G 3521Standard:DIN17223: High Carbon Spring Steel ...