... diameter:0.4mm~80mm 4.OEM and Customize stainless steel compression helical springs Details as follows: Material55CrSi,60Si2Mn,60Si2MnA,60Si2CrA(SAE9254 ... to 40 Tons. (per pc.)ApplicationExcavator, Digger Machine, Vehicle, Motorcycle, Train, Ship, Shakeout Machine, Oscillation Absorber, etc.Painting and Coating Rusting Paint ...