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YUAN SINE SPRING Latest extension springs factory for communication router

YUAN SINE SPRING Latest extension springs factory for communication router

YUAN SINE SPRING Latest extension springs factory for communication router

Stainless steel:
Stainless steel
Mean coil diameter:
9 mm
Free length(F.L.):
Surface treatment:
High-temperature heat treatment:
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Quantity Needed:
Product Comparison
Good materials, advanced production technology, and fine manufacturing techniques are used in the production of tension spring. It is of fine workmanship and good quality and is well sold in the domestic market.Our products are produced in accordance with . All materials used in the products are well selected and purchased from our reliable partners, which guarantees the competitive price and stable performance.YUAN SINE SPRING guarantees compress spring to be high-quality by carrying out highly standardized production. Compared with other products in the same category, it has the following advantages.
Company Advantages
1. stainless extension spring design has evidently improved the performance of extension springs , bringing good economic benefit.
2. The product is tested on numerous quality parameters before supplying to patrons
3. The high-efficiency QC team guarantees its excellent performance.
4. It is hardly worn or scratched because this product is extremely hard and resistant to sharps and pressure.

YUAN SINE SPRING Latest extension springs factory for communication router-1
Tension Springs

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.

Product Parameter

Car moto accessories industries

Stainless steelstainless steel
Wire diameter3 mm
Outside of diameter15 mm
Inside of diameter9 mm
Mean coil diameter9 mm
Active coil number9 mm
Free length(F.L.)400mm
Right hand screwok
Closed and ground ok
Surface treatmentok
High-temperature heat treatmentok


Car moto accessories industries 

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YUAN SINE SPRING Latest extension springs factory for communication router-3

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Company Features
1. Advanced technology and strong R&D capability help YUAN SINE SPRING ENTERPRISE CO., LTD become a leader in extension springs industry.
2. Our small extension springs is technically supported.
3. Sustainability is a big goal that enables us to make a positive impact on the world. We integrate sustainability into the anatomy of how we can help customers succeed and how we run our business. We assert both professional and ethical approach, coming from corporate values such as team cooperation, reliability, high quality, long-term cooperation, social responsibility, and sustainability. Check it! YUAN SINE SPRING ENTERPRISE CO., LTD is committed to the production of high quality, low price stainless extension spring . Check it!
Summer Mi

Q: What's your main products?
A: Our factory mainly produces insert nut, precision electronics screw, stud standoff,rivet, Linear shaft, linear       shaft in linear bearings etc.


Q: When can I get the quotation?
A: We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price,please call      us or tell us in your email so that we will reply your inquiry with priority.

Q: How can I get a sample to check your quality?
A: After price confirmation, sample order is available to check our quality.

Q: Have items 100% finished in stock?
A: Most items are all finished in stock, but some items are newly machined according to your requirements.


Q: Do you have any MOQ limit ?
A: Yes, it depends on the products' size and production process.


QDoes it cost money for shipping?
A: Yes, the shipment cost needs to be paid.


Q: Which shipment methods are available ?
A: DHL,FEDEX,TNT,UPS,EMS,AIR(door to door) or according to customers' requirement.


Q: How long is the delivery time?
A: A week for sample; 15-25 days for mass production.


Q: How long is the leading time? ?
A: Leading time is usually 3-7 working days depending on the order quantity.

Product Message