The entire production process of YUAN SINE SPRING stainless extension spring strictly follows the international norms. 2.
The product is safe and contains no toxic substances. It has been tested in terms of material ingredients like Chlorinated phenols and dimethyl fumarate. 3.
This product has functional safety. Possible failures or faults which could lead to a hazard are analyzed in detail in the manufacture, hence they are eliminated or reduced in use. 4.
People who live in humid areas will love this product because it will not get rust even it frequently contacts with moisture. 5.
The product has no burrs and its edges are extremely smooth. Customers say they would prefer to repurchase it for their hardware stores.
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
YUAN SINE SPRING ENTERPRISE CO., LTD has become the China's largest stainless steel extension springs enterprise and production base. 2.
YUAN SINE SPRING ENTERPRISE CO., LTD has made a modern manufacturing line with strict, serious and sincere attitude. 3.
We pursue openness and honesty in business. We believe that open communication builds trust, which is the foundation of any relationship, whether with our employees or our clients. Get price! All of our business actions are socially-responsible business practices. The products we produced are safe to use, and we occasionally take part in social philanthropies. Get price! YUAN SINE SPRING ENTERPRISE CO., LTD actively verifies the quality of raw materials we purchase. We are working hard to drive progress towards a sustainable future. Our efforts in promoting sustainable development include introducing management systems in line with international standards for the environment. For example, any production waste will be seriously treated to guarantee no harmful emission.