Rolling shutter springs are one of the most important components in shutter doors, ensuring smooth opening and closing cycles. At the heart of these springs lies the bande d'acier à ressort — specifically engineered for strength, elasticity, and durability.
At Jiaxiao MTC, we supply C67S, C75S, and C80 spring steel strips widely used in shutter spring production, with proven performance in both domestic and international markets.
Why Steel Strips Are Critical for Shutter Springs
Shutter springs must withstand constant bending, twisting, and heavy loads. If the steel strip is too brittle, it breaks; if it is too soft, it loses tension. That’s why choosing the right grade and hardness is key.
Spring steel strips combine high tensile strength with excellent flexibility, making them ideal for long-lasting shutter door performance.
Suitable Grades for Shutter Spring Steel Strips
- C67S – Balanced elasticity and hardness, suitable for light-to-medium duty shutters.
- C75S – Excellent springback, widely used for residential and commercial rolling doors.
- C80 – Higher hardness, perfect for heavy-duty shutters requiring more load capacity.
Through trempe et revenu, these grades achieve the perfect balance between toughness and flexibility.
Typical Dimensions and Load Capacity
Spring steel strips are available in various widths (30–80 mm) et thicknesses (1.0–1.4 mm).
Example load capacities:
- 60 × 1.20 mm → ~29 kg load
- 55 × 1.20 mm → ~26 kg load
- 40 × 1.00 mm → ~13 kg load
By selecting the right size, shutter manufacturers can ensure optimal strength with minimal risk of breakage.
Quality Control at Jiaxiao MTC
Every coil is carefully processed with:
✅ Deburring & Edge Treatment – Prevents cracks during bending
✅ Polishing & Surface Control – Ensures smooth operation and longer life
✅ Hardness Testing – Guarantees consistency in every batch
✅ Export-Ready Packaging – Protected against rust and damage during shipping
Conclusion
For reliable shutter door performance, spring steel strips are the key. With strict process control and high-quality raw materials, Jiaxiao MTC supplies shutter spring steel trusted by customers worldwide.
? Contact us today to request technical details, custom sizes, or free samples of our shutter spring steel strips.
