China Factory Customized Coil Heavy Duty Extension Spring with Double Hook

1.Sophisticated equipment.
2.Technology is very advanced.
3.Excellent technical team.
4.High quality products but competitive price.
5.Free samples, low MOQ, factory direct sale.
6.Prompt reply. In time delivery.
7.Can be customed.

Product Details
We are committed to the R&D, manufacturing, sales of electrical distribution panel, electrical switchboard, power factor correction capacitor bank and provide customer with technical services. Looking forward to the future, our company, which has entered the stage of rapid development, will give full play to the existing advantages, increase innovation efforts, and strive to become a world-class manufacturer. We will continue to adhere to the company's business philosophy, continue to provide users with better service, welcome new and old customers to contact us and establish long-term, friendly cooperation. Continuously meeting customer needs is our top priority, and we will do our best to guarantee each customer's service requirements. Now now we have recognized steady and long organization relationships with customers from all over the world.

Product introduction:

Tension spring is a kind of spiral spring which is usually made of the circular cross-section to withstand axial tension.  It is tight between the circle and circle of the spring with no clearance when it’s under no load. A number of different terminal devices or "hook" are used to ensure tension of extension springs.

Product design:

The design of tension spring depends on spring material, material diameter, outside diameter, length, number of turns, the location and shape of earring, load and the corresponding value.

Product specfications:

Spring wire diameter range from 0.1 to 8.0 mm.

Product classification:

Stainless steel extension spring; Precision extension spring; Galvanized extension spring; Double-hook extension spring; Movable hook extension spring; Large diameter extension spring; High quality extension spring; Nickel plated extension spring; Fitness extension spring; Metal extension spring; Carbon steel tensile spring; Heavy duty extension springs; Garage door extension springs; Expansion spring; High elastic tension spring; Big tension spring; Small tension spring; Custom tension spring; and so on.

Product process:

Product Process

Product inspection:

Inspection Equipment

Application:

They can be used in many occasions, such as production assembly, experiment, research, maintenance and so on. Tension spring occupies an important position in the global market, widely used in national defense, Marine, computer, electronic, automotive, mold, medical, biological, chemical, aerospace, railway, nuclear power, wind power, thermal power, engineering machinery, mining machinery, construction machinery, elevator, etc.


XD HI-TECH, established in 2007 is one of the excellent manufacturers in China. Come and find china designed stainless steel heavy duty garage door extension spring manufacturer from our factory. With high precision, and good performance, our custom products have a wide application field. Welcome to wholesale our quality products and the PDF display is also offered.

We aim to create more value for our customers with our rich resources, advanced machinery, experienced workers and excellent services for China Factory Customized Coil Heavy Duty Extension Spring with Double Hook. Our company is committed to be the most competitive company in terms of quality and price, so as to serve the majority of dealers and customers. Since establishment in the early 1990s, we have set up our sale network in many countries.
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