English
Deutsch
Français
Español
日本語
한국어
中文
Upload a DrawingExtension springs are designed to provide reliable pulling force when extended. With hooks or loops at both ends, these springs are commonly used to connect components, absorb tension, and return assemblies to their original position after the load is released.
Our extension springs can be manufactured with different wire diameters, body diameters, free lengths, hook configurations, spring rates, and material options. They are suitable for machinery, automotive components, agricultural equipment, garage doors, electrical devices, and various industrial applications.
Each spring is produced according to approved drawings, samples, or technical requirements. From design review and tooling preparation to forming, inspection, and packaging, we maintain careful control throughout the production process. Standard and custom extension springs are available to meet different load, space, and installation requirements.
For a customized quotation, please provide your drawing, sample, dimensions, hook style, working load, extended length, working conditions, and expected quantity. Our team will recommend a suitable extension spring solution for your application.
Extension Springs
Built to deliver reliable tension and controlled extension.
- Wire Diameter
- 0.1 – 80mm
- Outer Diameter
- 1 – 150mm
- Free Length
- 2-600 mm
Upload a drawing for engineering review. Dimensions are optional when a drawing is provided.
REQUEST AN ENGINEERING REVIEW
Start Your Inquiry
Send the drawing you already have.
A PDF, CAD file, sketch or clear reference image is enough to begin an engineering review.
- 01
- GeometryKey dimensions or installation space
- 02
- Working pointRequired load, travel or operating position
- 03
- ConditionsMaterial, temperature or corrosion exposure
- 04
- OrderPrototype or production quantity
No drawing available? Choose Enter Dimensions Manually.
Share the key dimensions you know.
Enter any values you know. Engineering will confirm the remaining geometry before quotation.
- d
- Wire diameterThickness of the spring wire
- D
- Coil outside diameterMaximum diameter across the coil
- L
- Body or overall lengthState whether hooks or loops are included
QUALITY VERIFIED AT EVERY STAGE
- 1
Drawing Review
Drawing, load and material reviewed.
- 2
First Article
Sample dimensions and force verified.
- 3
In-process Inspection
Critical dimensions checked during production.
- 4
Final Report
Inspection and traceability records issued.
PREPARED FOR DELIVERY
Protected Packaging
Oil paper, VCI bags, bubble film and reinforced cartons.
Custom Crates
Plywood crates for heavy loads and long-distance shipping.
Palletized & Labelled
Protected racks and clear labelling organize part number, lot and quantity.
Global Delivery
Export-ready loads prepared for reliable international logistics.
QUALITY & DOCUMENTS
COMMON QUESTIONS
Answers Before You Ask
Clear answers to common purchasing questions.
Can you manufacture from my drawing without a standard part number?
Yes. Most of our projects start from a customer drawing or application sketch. We review the geometry, material and performance needs, then confirm manufacturability before quoting.
What is your minimum order quantity?
We support both small-batch prototypes and high-volume production. There is no fixed MOQ — quantities are evaluated based on the spring type, tooling and material requirements.
How do you handle springs for high-temperature or corrosive environments?
We select materials (such as Inconel, stainless steel or special alloys) and surface treatments matched to the operating environment. Our engineers can recommend options based on temperature range, media exposure and cycle life.
What documentation can you provide with production orders?
We supply inspection reports, material certificates, dimensional records and traceability documentation as agreed during project setup. PPAP and FAIR packages are available for automotive and aerospace programs.
What is the expected lead time?
Lead time depends on the spring type, material, tooling, quantity and approval requirements. We confirm the production and sample schedule during quotation.
How are payment and delivery terms confirmed?
Commercial terms, delivery address and documentation requirements are confirmed with the quotation before production starts.
What support is available after delivery?
After-delivery questions can be routed through the project contact for drawing questions, quality documents, repeat orders and application feedback.
Can you provide samples before mass production?
Yes. Prototype and pre-production samples can be arranged for dimensional, load and application approval before the full production order proceeds.
Two ways to start the review
Attach the file you already have, or enter the dimensions you know. Both go to the same engineering team.