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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: HONGGANG
  • Model Number: SPRING
  • Style: Coil
  • Load Type: Compression
  • Material: Alloy
  • Usage: Industrial
  • Color: red/black/white or customized
  • Finish: Zinc/Nickel/Chrome/Powder coating or customized
  • Delivery time: 7~15 work days after receive order
  • Application: Hardware/Industrial/Auto/Motpr/electric power and etc.
  • Payment term: T/T,L/C,Western Union,ESCROW etc.

Packaging & Delivery

Packaging Details: 1.inner packing: plastic bag
2.outer packing: carton box
3.other packing: wooden or plastic pallets,and at your request
Delivery Detail: Shipped in 10 days after payment






Product Description

The information of ours Extension Spring :


1.Materialcarbon steel(SWC),Alloy steel SEA9260/9254/6150/SUP9/SUP10/SUP12,51CrV4,stainless steel,Music wire/piano wire(SWP);beryllium copper etc.
2.Wire diameter or thickness0.1~80 mm
3.FinishZinc,Chorme,Nickel, Silver,Gold, Tin,Powder coating,Oxide black or customzied
4.Processing craftMaterial purchased-Producing-Frist Testing-Coiling-Inspection-Heat treatment-Cleaning-Surface Treatment-OQC-Packing-Shipping
5.Application Industrial/auto/Motorcycle/electronics/electric power/Toys/Sports goods/Machinery equipment etc.
6.Employees 50~100 people,and 5 technicians of them
7.Quality Certification ISO9001:2008
8. Payment term T/T,L/C or other payments
9. Equipment Advaneed CNC spring machines with high precision and efficiency, advanced heat treatment  and testing machine equipment
10.Packing inner packing with plastic bags,and then carton boxes for outer packing,at last wooden or plastic pallets for request
11. Shipment By sea/air/UPS/TNT/Fedex express etc.


What kinds of extension Spring sharp you want?


Full loops at center,Plain ends,Full loops over center,Full loops at side,coned ends with adjustable hooks,Double extension spring,Small loops at side etc.


And which type of tension spring ends you need?All you can see the picture as below:

If you want to send an enquiry to us, you must have some datas of the tensile spring, such as:

1.wire diameter

2. the dimension of the spring inner diameter and outer diameter,and include the tolerance

3.free length of the spring

4. Total coils or active coils of the spring

5.the materials

6. Surface treatment

7. what kind of the spring sharp,and which ends of the spring you want?


Or it's good that you can send the drawings or real samples to us

the details of the extension springs as below:

Company Information

ZHUJI HENGGANG SPRING MANUFACTURING CO., LTD.  Which is the professional springs manufacturer in China. It was founded in 1997, and SHAOXING SPRING FACTORY as the predecessor. Our company is the pointed manufacture that is authorized  by China National Chemical Equipment Corporation, but also is for Motorcycles, Elevators, and Printing Machinery Industrial in China.

With developing and advancing for nearly 20 years, Our company has been more and more stronger ,More than 13,000 square meters of modern plants had been use; Over 60 people technicians. Striving for excellence, and be perfection. "Credit is the base, Quality as the first" is always our business concept.. Depended on Advanced production equipment; mature production process ; Strict quality controlled; and advanced production management, thereby the best quality of springs was produced , and used for Machinery Equipment and Manufacturing Industry.

Music wire KOS, KIS high carbon steel of Korea, 17-7PH, SUS302, SUS304, SUS316 stainless steel from Japan, Switzerland , and Inconel X750, Inconel 718, Monel, Nimonic 90 high temperature alloy steel , the raw materials are imported and used, which is a powerful guarantee for good quality springs .

Our company has already implemented ISO9001`2008 international quality system certification. Our spring products has been widely used in various industries, such as valves& instruments, Engineering machinery, Packaging & Printing Machinery, Construction Machinery, Farming&forestry Machinery ,Auto&Motorcycles, Petrochemical, Electronics, Sports Equipment, Electrical equipment, Precision instruments ,Hardware Tools, Aviation , military and etc. There always have a good confidence and trust from all clients on our company .

Based on domestic market ,and developing for the global market!Through development and growth , there have a good market share of domestic,and developing to overseas markets now, but also our products have already been exported to Russia, Germany, Britain, Finland, Belgium, Switzerland, Serbia, Iran, Pakistan, Brazil and etc.

"Best quality comes from professional, the professional is only worth your trust" Welcome you to visit for our company from all over the world!


 Our company located

 Our plants 1

Our plants 2

Our plants 3

Our plants 4

Our plant 5

Advanced CNC equipments

Good quality from testing&inspection equipments

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