OEM High Quality Steel Spring Supplier - Double Hook Wire Coil extension Tension Springs – DVT Spring

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OEM High Quality Steel 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.

1Double Hook Wire Coil extension Tension Springs
Double-Hook-Wire-Coil-extension-Tension-Springs2

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

Extension spring parameters

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.

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We have now probably the most innovative production equipment, experienced and qualified engineers and workers, regarded high quality control systems and also a friendly expert income team pre/after-sales support for OEM High Quality Steel Spring Supplier - Double Hook Wire Coil extension Tension Springs – DVT Spring , The product will supply to all over the world, such as: Liverpool, Canada, Belarus, Our company has already have pass the ISO standard and we're fully respect our customer 's patents and copyrights. If the customer provides their own designs, We will guarantee that they will likely be the only one can have that merchandise. We hoping that with our good products can bring our customers a great fortune.

4 Inch Extension Spring