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Tension Spring | SUS304 Stainless Steel Custom Springs for Industry
A Tension Spring, also known as an extension spring, is a precision-engineered mechanical spring designed to absorb and store energy when stretched. It generates a pulling force between two components, providing reliable tension, resistance, and controlled movement in various mechanical systems.
METS specializes in manufacturing custom tension springs made from high-quality SUS304 stainless steel, offering excellent corrosion resistance, high strength, fatigue durability, and stable performance. Our extension springs are produced with advanced CNC spring coiling equipment and strict quality control to ensure consistent dimensions, accurate load performance, and long service life.
Our SUS304 stainless steel tension springs are widely used in industrial machinery, automotive components, electrical equipment, medical devices, household appliances, and precision instruments. With flexible customization options for wire diameter, spring dimensions, hook design, load requirements, and surface treatment, we provide OEM and ODM spring solutions tailored to different application needs.
Whether you require small precision extension springs or heavy-duty industrial tension springs, METS delivers reliable spring manufacturing solutions with competitive pricing, fast delivery, and professional technical support.
Features of Tension Spring
High-Quality SUS304 Stainless Steel Material: Made from premium stainless steel SUS304, the springs provide excellent corrosion resistance, oxidation resistance, and durability, making them suitable for harsh working environments.
Precision Manufacturing: Advanced CNC spring forming technology ensures accurate dimensions, consistent spring force, and stable mechanical performance for high-volume production.
Custom Hook Designs: Different hook structures are available, including English hooks, German hooks, extended hooks, cross-center hooks, and customized connection designs.
Excellent Fatigue Resistance: Optimized spring design and heat treatment improve fatigue life, allowing continuous operation under repeated stretching cycles.
Wide Industrial Applications: Suitable for automotive, machinery, electronics, electrical equipment, medical devices, and automation systems.
OEM & ODM Manufacturing Capability: METS supports customized production according to customer drawings, samples, specifications, and application requirements.
Technical Parameters
Parameter
Specification
Product Name
Tension Spring / Extension Spring
Material
SUS304 Stainless Steel, SUS316, Carbon Steel, Music Wire
Wire Diameter
0.1mm - 20mm (Customized)
Spring Outer Diameter
Customized According to Requirements
Free Length
Customized
Hook Type
English Hook, German Hook, Side Hook, Extended Hook, Custom Hook
CNC Spring Coiling, Bending, Heat Treatment, Surface Finishing
Tolerance
±0.05mm or According to Drawing Requirements
Production Volume
Prototype, Small Batch, Mass Production
Quality Standard
ISO9001 Quality Control System
Applications of Tension Spring
Automotive Industry
Tension springs are widely used in automotive components such as throttle systems, seat mechanisms, brake systems, engine components, and interior assemblies. Their stable tension force ensures reliable operation and long service life.
Industrial Machinery
Extension springs provide controlled pulling force and movement control in mechanical equipment, automation machines, production lines, and industrial tools.
Electrical & Electronic Equipment
Stainless steel tension springs are commonly applied in switches, connectors, electrical devices, and precision electronic products due to their excellent conductivity stability and corrosion resistance.
Home Appliances
Used in washing machines, refrigerators, ovens, door mechanisms, and other household products requiring reliable tension control.
Medical Equipment
Precision extension springs are suitable for medical instruments and devices requiring accurate force control and high durability.
Automation & Robotics
Custom tension springs support motion control systems, robotic arms, sensors, and automated equipment requiring repeated movement performance.
Customization Services
METS provides complete custom tension spring manufacturing services based on customer drawings, samples, or technical requirements.
Custom Options Include:
Material Selection
SUS304 Stainless Steel
SUS316 Stainless Steel
Carbon Steel
Music Wire
Alloy Spring Steel
Dimension Customization
Wire diameter
Coil diameter
Spring length
Number of coils
Hook dimensions
Spring force requirements
Hook Design Customization
Standard extension hooks
Machine hooks
Cross hooks
Double hooks
Special-shaped hooks
Performance Customization
Load requirements
Working stroke
Fatigue life
Operating temperature
Corrosion resistance
Surface Treatment
Electroplating
Passivation
Polishing
Heat treatment
Our engineering team can assist customers with spring design optimization to improve product performance and reduce manufacturing costs.
Support and Services
Professional Engineering Support
Our experienced engineers provide technical consultation, spring design suggestions, and manufacturing solutions based on your application requirements.
Prototype Development
METS supports rapid prototyping for new spring designs, helping customers verify performance before mass production.
Quality Inspection
Each batch undergoes strict inspection including:
Dimension inspection
Spring force testing
Material verification
Appearance inspection
Load performance testing
OEM Manufacturing
We provide flexible OEM and ODM services for global customers, supporting customized designs and long-term cooperation.
Fast Response & Delivery
Efficient production management ensures competitive lead times while maintaining stable product quality.
Packing and Shipping
Packaging
To ensure product protection during transportation, tension springs are packed according to quantity and customer requirements:
PE bags for small quantities
Plastic trays for precision springs
Carton packaging for standard shipments
Wooden cases for large-volume orders
Customized packaging and labeling services are available.
Shipping Methods
We provide multiple shipping options:
Express: DHL, FedEx, UPS, TNT
Air Freight
Sea Freight
Customer-designated logistics providers
All products are carefully inspected before shipment to ensure they meet customer specifications.
FAQ
Q1: What is a tension spring?
A tension spring, also called an extension spring, is a mechanical spring designed to resist pulling forces and return components to their original position after being stretched.
Q2: What materials are available for tension springs?
We manufacture tension springs using SUS304 stainless steel, SUS316 stainless steel, carbon steel, music wire, and other spring materials according to application requirements.
Q3: Can you manufacture custom tension springs?
Yes. METS provides fully customized tension spring manufacturing based on customer drawings, samples, dimensions, load requirements, and application environments.
Q4: What industries use extension springs?
Our tension springs are widely used in automotive, industrial machinery, electronics, electrical equipment, medical devices, appliances, and automation industries.
Q5: What is the minimum order quantity for custom springs?
MOQ depends on product size, material, and production requirements. We support prototype orders, small batches, and large-scale production.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2014
Total Annual:
30000000-5000000
Employee Number:
100~130
Ecer Certification：
Verified Supplier
2006,Established in Xiamen, METS is a professional hardware company specialized in mould design, mould manufacturing of contact and machine shell, automotive, electronics, LED lampshade, lead frame and lamination core(stator and rotor) etc. As well as precision metal stampings production.Our enginee... 2006,Established in Xiamen, METS is a professional hardware company specialized in mould design, mould manufacturing of contact and machine shell, automotive, electronics, LED lampshade, lead frame and lamination core(stator and rotor) etc. As well as precision metal stampings production.Our enginee...
