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China wholesale Car Suspension Coil Factory - Double Hook Wire Coil extension Tension Springs – DVT Spring Detail:
Basic Information
Mechanical extension springs are designed specifically for a height and weight of a product. The initial tension is the force that holds the coil together and must be exceeded to get the extension spring working. Although the standard initial tension is appropriate for most extension spring needs, initial tension can be customized for specific situations.
Extension springs are commonly used in automotive mechanisms, garage doors, trampolines, washing machines, tools, toys, and equipment in a wide array of industries. Extension spring ends are designed to meet specific application needs. Configurations include hooks, threaded inserts, extended twist loops, crossover center loops, expanded eyes, reduced eyes, rectangular ends and teardrop-shaped ends. Another extension spring configuration features a drawbar spring. In this design, the load at the ends of long, steel loops that pass through the spring center and compress the spring upon loading.


- Outer diameter- of the spring
- Wire diameter – of the wire used to create the spring
- Overall length – of the spring in the unloaded position
- Rate – amount of weight required to deflect the spring one inch
- Load -amount of weight the spring can carry when deflected to a given height

Specifications
Item
|
Double Hook Wire Coil extension Tension Springs |
Material
|
SS302(AISI302)/ SS304(AISI304)/ SS316(AISI316)/SS301(AISI301) |
SS631/65Mn(AISI1066)/60Si2Mn(HD2600)/55CrSiA(HD1550)/ |
Music wire/C17200/C64200, Etc |
Wire diameter
|
0.1~20 mm |
I.D
|
>=0.1 mm |
O.D
|
>=0.5 mm |
Free length
|
>=0.5 mm |
Total Coils
|
>=3 |
Active coils
|
>=1 |
End hooks
|
U shape, round shape etc. |
Finish
|
Zinc plating, Nickel plating, Anodic oxidation,Black oxided,Electrophoresis |
Power coating, Gold plating, Silver plating, Tin plating, Paint,Chorme, Phosphate |
Dacromet,Oil coating, Copper plating, Sand blasting, Passivation, Polishing,Etc |
Sample
|
3-7 work days |
Delivery
|
7-15days |
Appliction
|
Auto,Micro,Hardware,Furniture,Bicycle,Industrial,ect. |
Size
|
Customized |
Warranty period
|
Three years |
Payment Terms
|
T/T,D/A,D/P,L/C,MoneyGram,Paypal payments. |
Package
|
1.PE bag inside, carton outside/Pallet. |
2.Other packages: Wooden box, individual packaging, tray packaging,tape & reel packaging etc. |
3.Per our customer’s need. |
Product detail pictures:
Related Product Guide:
Along with the Client-Oriented enterprise philosophy, a rigorous high-quality control process, superior production products along with a robust R&D group, we constantly deliver premium quality products, exceptional solutions and aggressive costs for China wholesale Car Suspension Coil Factory - Double Hook Wire Coil extension Tension Springs – DVT Spring , The product will supply to all over the world, such as: New Orleans, Chile, Naples, We solution have passed through the national skilled certification and been well received in our key industry. Our specialist engineering team will often be ready to serve you for consultation and feedback. We are able to also provide you with no cost samples to meet your needs. Best efforts will be produced to offer you the very best service and solutions. For anyone who is considering our business and solutions, please speak to us by sending us emails or get in touch with us right away. As a way to know our products and enterprise. lot more, you'll be able to come to our factory to find out it. We will constantly welcome guests from around the globe to our firm. o build enterprise. elations with us. Please really feel absolutely free to make contact with us for small business and we believe we will share the top trading practical experience with all our merchants.