1.ungalvanized steel wire 2.carbon spring steel wire, 3.high tensile strength , 4 ... :45#,50#,60#, 70#, 75#, 72A, 72B, 82B, 65Mn 2) Diameter range: 0. 30-6.0mm 3) Standard: GB4357-89 ... , DIN17223 4) Shipment: Prompt 5) weight: As the buyer's requests Packing: In coils, wrapped ... 1270N/mm2 ~ 3000N/mm2(Class A, Class B, Class C) 2.3mm hard drawn high carbon spring steel wire