Garage door spring

Garage door spring 

Application :

1.Widely used in automobiles,motorcycles,amusement park

2.Materials are high carbon steel,stainless steel

1)The Wire Diameter of this extension spring: 5mm--8mm;

2)Raw Mterials of this torsion springs:stainles steel 302, hign carbon steel, music wire, etc;

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

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

5)High Quality.