The quality control of YUAN SINE SPRING stainless extension spring not only relies on manual inspection but also advanced technology such as computerized testing and hardness testers. 2.
The product features reliable operation. It has an advanced electrical system that is equipped with overvoltage, overcurrent, and overheating protection. 3.
The product is available at very competitive prices and is widely used in the market.
Tension spring is a helical spring subjected to axial tension. There are different kinds of hooks. English hook, German hook, long hook, semicircle hook, duck bead hook and so on. The “hook” is used to guarantee the source of tension of stretching spring. The gap for the ring and the ring must be tight and exact. These points must be identified. It is used to control the movement of machine parts , store energy, measure the size of the force and so on. Some of tension spring are made for precondition for safety. That’s what we value and strict on quality control. We must give more consideration to service this.
|Stainless steel||stainless steel|
|Wire diameter||0.3 mm|
|Outside of diameter||4.4 mm|
|Inside of diameter||4.4 mm|
|Mean coil diameter||4.4 mm|
|Active coil number||55|
|Total number of coils(Nt)||55|
|Free length(F.L.)||25 mm|
|Right hand screw||ok|
|Closed and ground ||ok|
|High-temperature heat treatment||ok|
2-ways tension spring for communcation router
As a technologically stainless steel extension springs advanced enterprise, YUAN SINE SPRING ENTERPRISE CO., LTD has superiority in quality. 2.
YUAN SINE SPRING ENTERPRISE CO., LTD has strong technical strength for developing heavy duty extension springs . 3.
Looking ahead, we will always treat others with dignity, act with honesty, and maintain the highest level of integrity. Welcome to visit our factory! We are committed to the development of our people at all levels, ensuring that all our employees have the requisite skills and best practice knowledge to deliver actions that will drive organizational performance in keeping with and exceeding our clients’ expectations and demands. We regard innovation as a major approach for us to achieve greater success. By increasing investment in the R&D sector and cultivating a pool of talents, we are committed to strengthening our innovative ability. Our company has a strong sense of integrity. All employees must be ethical to ensure that our business is conducted with the highest level of integrity. Welcome to visit our factory!