Custom SS301 Constant Force Springs for Fire Damper Applications

Constant Force Springs

onstant force springs provide consistent tension and smooth retraction, delivering a nearly constant uncoiling force ideal for retraction, counterbalancing, and tension control. Since 2018, SEME Hardware has specialized in high-quality constant force springs, offering in-house solutions from engineering support to assembly. Our stainless steel springs are designed for durability, corrosion resistance, and long service life. We support full OEM/ODM customization and also keep standard springs in stock to reduce lead time and costs.

Customize Your Constant Force Springs with SEME Hardware

At SEME Hardware, we specialize in custom constant force springs tailored to meet a wide range of applications. Available in thicknesses from 0.06 mm to 0.6 mm and widths from 2 mm to 55 mm, our springs are offered in stainless steel and carbon steel to meet various performance and environmental needs.

For higher force and load requirements, we provide advanced solutions like multi-layer laminated springs and multi-load assemblies, ensuring stronger, more stable, and consistent tension.

We offer complete OEM/ODM services, from design consultation and material selection to precision manufacturing and assembly, delivering reliable and cost-effective solutions for your specific needs.

How Do We Assure the Quality of Our Constant Force Springs?

At SEME Hardware, quality is built into every stage of manufacturing your constant force springs.

Our integrated quality assurance process includes:

• Material Certification & Incoming Inspection

• Prototyping & R&D Support

• In-Process Monitoring & Final Quality Control

Each constant force spring undergoes strict testing and inspection to ensure it fully meets your specifications before shipment.

We are committed to being your long-term partner in quality.
Let’s discuss your project and requirements.

Dongguan SEME Hardware Spring Products Co., Ltd. is a professional constant force spring manufacturer specializing in custom stainless steel and carbon steel constant force springs. With over 10 years of focused experience, we deliver stable force output, flexible customization, fast lead times, and strict quality control for applications such as retracting systems, counterbalance mechanisms, and industrial equipment worldwide..

FAQ

1. What products do you manufacture?
Metal stamping spring clips, stainless steel and copper springs, CNC machined parts, and plastic components. OEM/ODM available.

2. Do you support OEM/ODM customization?
Yes. Send us your drawings or samples – our engineering team will support you from design to production.

3. What is your MOQ?
Flexible. Small-batch samples and trial orders are welcome.

4. Can I get samples before ordering?
Yes. Sample lead time is 5–10 working days.

5. How do you ensure quality?
Strict QC from raw material to final shipment – dimensional checks, functional testing, and appearance inspection.

6. How can I request a quote?
Contact us with drawings, quantities, and material requirements – we'll reply within 24 hours.

Contact us today – your trusted partner for custom spring solutions