Extension springs are also widely used to in industrial applications. Hooks stretch from both ends and create drawing forces.

Configuration of Extension Springs:

1. Materials: piano wires, stainless steel wires, high carbon steel spring wires, nickel wires, phosphor bronze wires, bronze wires, and beryllium copper wires.

2. Wire diameter: ø 0.1 mm ~ ø3.0 mm.

3. Spring OD: ø1.2 mm or more.

4. Total number of coils: number of active coils plus the coils forming the ends.

5. Free length: the length of an unloaded spring in a free state.

6. Load capacity: our technical staff will provide assistance to customers with the design.

7. Shapes of end hooks: as the figure shown (left), as per your specific need.

8. Surface treatment: as per your specific need.

  A proper specification design helps create a good spring durable and resistant to fatigue. We provide assistance to our customers from designs, samples, production and shipping. We are always serious in production and thoughtful in services. (Call us at: 02 -22868885)