How Garage Door Springs Are Tested

⚙️ English Version

Although a garage door spring looks small, its quality directly determines the safety and lifespan of the entire door system. So, how are these springs tested before delivery? Here’s an inside look at our standard testing process.

1. Material Inspection

Every batch of steel wire is tested before production to ensure it meets ASTM A229 high-carbon steel standards. We check wire diameter, tensile strength, hardness, and surface smoothness to prevent cracks or defects.

2. Dimension Accuracy Check

After coiling, each spring is measured for inner diameter, wire diameter, and length to match customer specifications. All dimensions are controlled within a 0.1mm tolerance.

3. Torque Testing

Using professional torque testing equipment, we simulate real garage door operation to confirm the spring provides the correct balance. This prevents doors from being too heavy or bouncing back after installation.

4. Cycle Life Testing

This is the most important stage. Springs are repeatedly compressed and released on a testing machine to simulate daily operation. Every spring is certified for 15,000–17,000 cycles, ensuring long-term durability and safety.

5. Surface Treatment & Corrosion Test

Springs with electrophoresis coating or galvanization are tested for corrosion resistance and salt spray durability, ensuring reliable performance even in humid or snowy conditions.

✅ Conclusion

From raw material to final inspection, each test is a promise of quality and safety.
That’s why Wangxia Springs has earned the trust of customers in the U.S., Canada, and Europe, known for reliable performance and long service life.