Materials applied for manufacture of spring steel wire: Q195,Q235,45,65,70, 72A, 72B, 82B, 65Mn Diameter of carbon spring steel wire supplied: 0.3mm-6.0mm Surface treatment: bright or galvanized Technical Info: Carbon steel spring wire Specifications: 1) Material: 60#, 70#, 75#, 72A, 72B, 82B, 65Mn 2) Diameter range: 0.15-12. 0mm 3) Standard: GB4357-89, DIN17223 Packing: In coils, wrapped by gunny cloth Transport: Loading about 20tons in one 20's container