... ~16mm 2.Grade:A,B,C 3.Steel Grade: carbon steel 60, 65,70, 85 4. Used in ... best service. Spring steel wire1.spring steel wire fall into carbon steel wire and alloy.2.The adopted standard consists ... of EN10270, DIN17223, JISG3521, GB4357, BS2763, etc. 3.The steel wire ... line, work shop, warehouse and laboratory as below: carbon spring steel wire