1.ISO9001:2008 2.Material:spring steel, alloy steel, stainless steel 3.Wire diameter:0 ... , Exporters, Designers and OEM Suppliers of all types of Spring. Material55CrSi,60Si2Mn,60Si2MnA,60Si2CrA ,60Si2CrVA,etcWire Diameter0.4mm~80mmFree ... Capacity - Up to 40 Tons. (per pc.)ApplicationExcavator, Digger Machine, Vehicle, Motorcycle, Train, Ship, Shakeout Machine, Oscillation Absorber, etc.Painting ...