Custom Constant Torque Spring Manufacturer – Spring for Window Shades | Seme Hardware

Product Basic Parameters
| Parameter | Details |
|---|---|
| Product Item | SM-031 |
| Category | Constant Torque Springs / Contorque Springs |
| Material | Stainless Steel |
| Shape | Coil |
| Size | Fully Customized |
【👉 Get a Free Sample & OEM Quote】
Product Description

As a professional custom constant torque spring manufacturer in China, SEME Hardware focuses on the production of high-precision constant torque springs for window shade applications.
Contorque springs are core components for cordless window shades, roller blinds, and spring hoist systems. They provide stable, consistent reset torque and support long‑cycle repetitive use with reliable service life.
We support multi-material customization, including carbon spring steel, alloy spring steel, stainless steel, and various oil‑quenched tempered alloy spring steel materials to meet different product standards and application environments.
Product Features

✅ Excellent fatigue resistance – Resists long‑term vibration and alternating stress, ensuring stable curtain operation
✅ Strong toughness and impact load resistance – Not easy to deform during daily lifting and pulling
✅ High elastic limit and stable torque output – Effectively improves curtain smoothness and service life
✅ Simple structure – Easy installation, maintenance, and replacement, with low overall use cost
【👉 Get a Free Sample & OEM Quote】
Product Applications

Our custom constant torque contorque springs are widely used for:
Cordless window shades
Roller blinds
Household curtain lifting systems
Automatic reset mechanical equipment
Ideal for residential and commercial window decoration products.
Packaging & Delivery

| Item | Details |
|---|---|
| Inner Packaging | PE bag or customized |
| Outer Packaging | Standard carton box or customized |
| Delivery | According to formal contract requirements with stable lead time |
Why Choose SEME Hardware


Dongguan Seme Precision Hardware Co., Ltd. is a professional constant torque spring manufacturer with over 10 years of precision hardware production experience. We provide:
✅ Full OEM & ODM custom services
✅ Strict quality inspection
✅ Factory direct pricing
✅ On‑time delivery for global clients
Contact Us
📧 Email: [email protected]
📞 WhatsApp / WeChat / Phone: +86 186 6511 1545
🌐 Website: https://www.semehardware.com
📍 Address: Building 1, No. 48 Minghua Road, Shijie Town, Dongguan City, Guangdong Province, China
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