1.hot coiled 2.wire diameter ranges from 16mm to 60mm 3.locomotive suspension spring 4.raw material: 55CrSi  

1.raw material: It is made by spring steel 55CrSi

2.hot coiled

3.wire diameter ranges from 16mm to 60mm

4.surface treatment : ecoating and powder coating

5.Unique performance in function test and certifiacate.

5. Guarantee of fatigue life as per customer's requirement.

6. two ends both grinded and closed.

Locomotive suspension spring