Welcome To Xulong Spring

Transportation Device Flat Torsion Springs , Coil Torsion Spring OEM

Transportation Device Flat Torsion Springs , Coil Torsion Spring OEM

Product Details:
Place of Origin:
Brand Name:
Xulong spring
ISO 9001:2008 TS 16949,ROHS
Model Number:
Payment & Shipping Terms:
Minimum Order Quantity:
Packaging Details:
Delivery Time:
Up to quantity
Payment Terms:
T/T , Western Union,Paypal
Supply Ability:
100000pcs per month

Transportation Device Flat Torsion Springs , Coil Torsion Spring OEM

Transportation Device Flat Torsion Springs , Coil Torsion Spring OEM


Material High carbon steel
Material thickness 1mm
Material width 3mm
Outside daimeter 36mm
Direction counterclockwise
Hardness HRV 38-42
Surface treatment black oxide
Load type torsion
Style spiral
Usage Door handle



Spiral springs are a type of springs, which are made from rectangular metal strips that have been wound into a flat spiral. These springs are designed to store and release rotational energy in the form of torque. One of the most popular types of spiral springs are constant coil springs, which are so named because they exert nearly a constant restraining force to resist uncoiling. Therefore, when the strip is extended, the inherent stress resists the loading force at nearly a constant rate. we can manufacture all types of spiral and constant coil springs from of a variety of materials and in many different sizes in order to meet your requirements.

Our company is widely acclaimed in the manufacture and supply of Steel Spiral Springs. These spiral springs are well equipped by high quality steel components. They are manufactured by latest machinery and technology available in the market. In addition to this these are available at affordable prices to suit the pocket requirement of our leading customers. These have high work consistency level.
Metal spring with hooks



Not only door handle,spiral springs made by xulong spring are used in lots of fields,show some of them as follow:

  • window / Shade Counterbalance
  • hinge mechanisms
  • dog leashes
  • rewinder
  • shelf pusher
  • home appliance
  • electric motors
  • automotive/transportation device
  • industrial tools

 Advantage of XULONG SPRING

1. rich experience: XULONG make spring since 1979
2. Huge capacity: we make 400-500 tons of springs each month
3. Wire diameter: 0.08-60mm
4. ISO 9001: 2008 TS 16949 certificated
5. High quality spring material imported from Japan,Korea etc
6. Well equipped spring testing machines
7. Professional technology team,all staff of tech dep studied springs for over 6 years
8. Excellent customer service,you can contact us online any time.
9. XULONG SPRING own abundant experience of providing OEM service
10. Reasonable price,quick delivery


for your door handle spiral springs ,plz feel free to contact us!