Best Design Spring Wire We offer different spring wire 100% high quality of wire High Carbon Spring Steel Wire Performance:1.Diameter range:0.2-13mm2.Main application:making spring,mattress,wire rope.3.Standard:GB4357-89,DIN17223-84,JIS G 3521-91 Standard:DIN17223-84: High Carbon Spring Steel Wire wire diameter(mm)Tensile Strength(N/mm² ) Grade A Grade B Grade C0.30 2370-26500.40 2270-25500.50 ...