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High Amplitude Heavy Duty Coil Springs , Heavy Duty Extension Springs

Good quality Stainless Steel Spring for sales
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High Amplitude Heavy Duty Coil Springs , Heavy Duty Extension Springs

China High Amplitude Heavy Duty Coil Springs , Heavy Duty Extension Springs supplier

Large Image :  High Amplitude Heavy Duty Coil Springs , Heavy Duty Extension Springs

Product Details:

Place of Origin: Shanghai,China
Brand Name: DAI DO
Certification: ISO/TS16949:2009

Payment & Shipping Terms:

Minimum Order Quantity: 1 PC
Price: Negotiation
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 10,000+ pcs
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Detailed Product Description

high amplitude  Heavy Duty Coil Springs for Automotive applications

Quick Details:

Product name

Heavy Duty Extension coil Springs /tension spring

Wire Diameter 


0.01mm ~ 50.0mm


Spring Steel, Stainless Steel Wire, or Equivalent International Standards, 

and we can do OEM As per customer requirement

Surface Finish

Zinc,Nickel,silver,golden,tin,powder coating or as per customer requirement.


TS16949, ISO9001




Aerospace, Industrial, Medical applications, Automotive applications, 

Household appliances,  Electronic, Toys, Hardwaretool.

Agriculture machines, Bicycle, Office equipment, Precision equipment, ect.




  1. As illustrated in the drawing on the right hand, use over 3000,00-time condition will become the use around solid length,Around the solid length since the number of active coils will becomegradually coherent,the spring constant will become higher,and as illustrated,the load characteristic rises and becomes high stress,which would cause damage to products,please refrain from using over 300,000-time condition.
  2. Use with any space will give impact and cause damage to spring.Besure to use with the initial deflecation of 1mm or more.
  3. Bad parallelism of mounted surface would cause twisting or damage to spring .Be sre to check the parallelism.
  4. Use without spring guide would cause twisting or damage to spring. Be sure to use spring guide such as shaft or outside diameter guide.
  5. When the using environmental temperature becomes higher , substantial function loss will occur. Be careful about using environmental.


Surface treatment:


Bronze, Bronzy, redbronze, Chromeplate, colorpainted,Nylok, ruspert, Magni, Absorber Oil, Hardened, phosphate(black,Gray), Black,Zinc Plated(green, black, white, blue, yellow), Rainbow, Plain, Nickel(black,white), Electrophoresis, Dacromet



Our advantages:


1: High quality with competitive price.

2: Strong capability of self-research and self-innovation, can provide one stop service from initial design to through prototype to finished products.

3: Abundant working experience with world-class customers.

4: Strong and efficient international sales' service


Contact Details
Shanghai DaiDo SP co.,ltd

Contact Person: Ms. Suzy, Cao

Tel: 86-21-57747016-825

Fax: 86-21-57745228

Send your inquiry directly to us (0 / 3000)