The necessary tests for YUAN SINE SPRING stainless extension spring have been strictly conducted. It has been tested in terms of safety, electromagnetic compatibility, vibration, reliability, and durability. 2.
This product has been well received by customers for its high performance and durability. 3.
The market share of this product is growing, showing its wide range of market applications. 4.
Due to its good characteristics, the product has received warm reception and rapid sales 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
YUAN SINE SPRING ENTERPRISE CO., LTD is a leader in terms of providing high quality products and services. 2.
Employees are at the center of our collective project. They partner closely in the manufacturing process, asking questions, listening to ideas, to foster innovation, cost-savings, and ease of implementation. 3.
We assume social responsibility in the production process and other business activities. We have made a strict plan to reduce pollution during the production process, including water and waste pollution. Currently, our business goal is to offer more professional and real-time customer service. We are going to expand our customer service team, and implement a policy that customers are guaranteed to receive feedback from our staff before the end of the business day.
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 3-5 days if the goods are in stock. or it is 5-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=3000USD, 100% in advance. Payment>=3000USD, 50% T/T in advance ,balance before shippment.
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