Used on machinery and equipment parts, the material is 2mm carbon steel spring steel wire, stereotypes after the wound into type, the length of finished product is 163.5mm, white zinc surface coated.
Technical Requirements:
1) Total number of coils: 29.5
2) Number of active coils: 27.5
3) Direction of rotation: right-handed
4) Diameter: 10.5
5) white zinc surface coated
http://www.weiyuanspring.com/various-types-of-tension-springs-torsion/01
