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ODM Custom Rectangular Section Die Molding Spring Supplier - 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.


Extension Spring Parameters
- 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:
With advanced technologies and facilities, strict good quality manage, reasonable rate, superior assistance and close co-operation with shoppers, we have been devoted to supplying the very best price for our consumers for ODM Custom Rectangular Section Die Molding Spring Supplier - Double Hook Wire Coil extension Tension Springs – DVT Spring , The product will supply to all over the world, such as: Macedonia, Germany, Vancouver, Our professional engineering group will always be ready to serve you for consultation and feedback. We are able to also offer you with absolutely free samples to meet your requirements. Finest efforts will likely be produced to give you the ideal service and goods. For anyone who is thinking about our company and merchandise, please contact us by sending us emails or contact us quickly. As a way to know our merchandise and firm. lot more, you can come to our factory to find out it. We'll always welcome guests from all over the world to our business to build company relations with us. Please feel free to get in touch with us for business and we believe we are going to share the top trading practical experience with all our merchants.