The Ultimate Guide to Sourcing Trampoline Springs

Intro

When customers judge a trampoline, they judge the bounce— and bounce is determined almost entirely by spring quality Yet most brands dramatically underestimate how much wire grade, coil tension, and plating impact both performance and safety.

If you’re sourcing springs from China, this guide will help you understand exactly what to look for, what to avoid, and how to ensure long-term durability.

1. Wire Grade Is the Foundation of a Good Spring

The quality of the metal determines everything — lifespan, elasticity, bounce feel, and long-term safety.

Common Wire Types:

• Music Wire (High Carbon Steel)

The highest-performance choice. Strong elasticity, tight feedback, premium bounce.

• Galvanised Steel

Widely used but varies massively between factories. Requires careful QC.

• Oil-Tempered Wire

Excellent strength and resilience under repeated load cycles.

Lower-quality wire means springs stretch early → bounce flattens → warranty claims explode.

2. Coil Count & Tension: The Engineering Behind the Bounce

The number of coils and the tension in the coil design directly affect the trampoline’s feel.

General rules:

• More coils = softer, smoother bounce

• Fewer coils = firmer, more powerful bounce

• Incorrect tension = uneven bounce or early spring fatigue

Premium springs are engineered — not guessed. If a supplier can’t explain their coil/tension assumptions, that’s a red flag.

3. Plating & Corrosion Protection

Springs fail fast when the plating is poor.

Plating Types:

• Electro-Galvanised:

Low cost, weak long-term rust resistance.

• Hot-Dipped Galvanised:

Thicker coating, superior corrosion resistance, best option for Australian & U.S. climates.

• Zinc Coating Thickness:

The thicker the zinc layer, the longer the spring lasts outdoors.

Rust = weak bounce + dangerous breakage points.

4. Essential Spring Tests Your Supplier MUST Provide

If the factory can’t give these, don’t trust the springs:

• Load/Stress Test

• Elasticity Retention Test

• Coil Fatigue Test

• Salt-Spray (Corrosion) Test

Testing prevents 90% of long-term problems.

5. Why We Custom Engineer Springs for Better Performance

With over 15 years in the trampoline industry, we’ve learned what most factories don’t consider:

• Exact wire grade

• Correct coil ratios

• Better plating standards

• Batch testing

• Long-term elasticity checks

Our custom-engineered springs consistently outlast cheaper “factory standard” versions — saving brands thousands in returns while improving customer satisfaction.

Conclusion

Springs aren’t a small detail — they’re the heart of the trampoline. Understanding wire quality, tension, plating, and proper QC can turn a generic trampoline into a high-performance product.

Getting this right is one of the simplest ways to increase customer satisfaction and reduce warranty claims.

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