Standard: DIN 17223-1, DIN EN 10270-1, JIS G 3521-1991, GB 4357-89 1.Steel Grade/Material: 45#, 42A, 42B, 60#, 65#, 65Mn ... --12.00mm3.Standard: GB 4357-89, JIS G 3521-91, DIN 17223, EN 10270, GB 3206-82, YB/T 5005-934.Chemical ... -86808839 FAX: 0086-523-86808039Mob: 0086-186-5117-4066Skyp: shelly_wire High Precision Spring Wire