extension spring 1.Widely used in automobiles,motorcycles,amusement park 2.Materials are high carbon steel,stainless steel

1)The Wire Diameter of this extension spring: 1.00 mm-20.00 mm;2)Raw Mterials of this extension springs:stainles steel 302, hign carbon steel, music wire, etc;

3)Surface Treatment of this extension springs: powder coating, nickel plating, chrome plating, zinc plating,etc;

4)This Extension Springs are produced by CNC spring's machines;

5)High Quality.