spring steel wire. Dia: 0.2mm~13mm Tensile Strength: different classes as you need Standard: GB4357-89, DIN17223 ,JISG3512-9 spring steel wire details. 1 ... #, 55#60#, 70#, 75#, 72A, 72B, 82B, 65Mn2) Diameter range: 0.2mm~13mm3) Standard: DIN17223, GB4357-89 and so on4) Shipment: Prompt5 ...