
Stainless Steel Coil Spring
We manufacture versatile stainless steel coil spring covering wire diameters 0.2mm–6.0mm and outer diameters 3mm–100mm. Customizable free height or length ranges from 5mm to 400mm with complete specification coverage. Professional winding equipment ensures uniform coil spacing and stable elastic performance for each stainless steel coil spring.
Structure & Types
Compression coil spring
Bears axial pressure, with both ends closed and ground or unground, used for buffering, resetting and energy storage.
Extension coil spring
Bears axial tension with various end hooks for tensioning, resetting and force balancing.
Torsion coil spring
Bears torsion torque with torsion arms for rotary clamping and torque transmission.
Multiple material options
SUS304, SUS316, SUS201, SUS631 stainless steel to match different performance and cost budgets.
Product Advantages
• Wide specification coverage: Custom micro precision units and large industrial elastic parts are both available.
• Uniform elasticity: Precision winding machines and rigorous process control guarantee consistent coil spacing and stable elastic output.
• Rust-proof & durable: Natural anti-rust property of stainless steel, enhanced by electrolytic polishing or passivation for extended service life.
• Flexible customization: Optimize spring parameters based on installation space, load capacity and working environment.

Application Scenarios
Extensively applied to hardware fittings, electronic appliances, medical instruments, food machinery, chemical equipment and outdoor supplies.
R&D & Design Support
Baoding Zhongxin Spring Manufacturing Co., Ltd. owns an independent R&D team with professional non-standard spring design capability. Clients only need to provide working conditions, load data and installation dimensions, and our engineers will conduct computational optimization via dedicated spring design software to deliver optimal elastic solutions. We support customization based on drawings, samples or usage demands, with full technical follow-up to guarantee compliance with practical working requirements.
Product Parameter Table
|
Parameter Item |
Value / Range |
|
Wire Diameter Range |
0.2 mm ~ 6.0 mm |
|
Outer Diameter Range |
3 mm ~ 100 mm |
|
Free Height / Length |
5 mm ~ 400 mm (Customizable) |
|
Optional Materials |
SUS304 / SUS316 / SUS201 / SUS631 Stainless Steel |
|
Spring Types |
Compression / Extension / Torsion (All coil structures customizable) |
|
Surface Treatment |
Natural / Electrolytic Polishing / Passivation |
|
Customization Mode |
Customized per drawings, samples or usage requirements |
|
Application Scenarios |
Hardware fittings, electronic appliances, medical instruments, food machinery, chemical equipment, outdoor supplies |
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