Custom Steel Springs —
0.1 to 18mm Wire Diameter

Thailand-Based Precision Manufacturer for US OEMs, Engineers, and Startups. All custom, all to your specs.

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Made in Thailand

Supply chain advantage

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0.1–18mm

Wire diameter range

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ASTM Standards

A228, A229, A313

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Fast Prototyping

Quick turnaround

Capabilities

Our Spring Capabilities

Compression Springs

0.1–18mm wire, custom rates, closed/open ends, ground ends.

Extension Springs

Custom end configurations, tight tolerances on initial tension.

Torsion Springs

Single/double torsion, custom legs, complex geometries.

Wire Forming

Custom shapes, precision bending, multi-axis forming.

Why Siam Spring

Why Choose Us

Precision Quality

In-house QC lab with comprehensive testing: fatigue, load, and material analysis.

300+ CNC Machines

Advanced spring machines with tight tolerance control per ASTM standards.

Export-Ready

Full export docs, FOB Thailand or CIF US port. Fast shipping.

Skilled Team

100+ experienced engineers and technicians in Thailand.

Industries

Industries We Serve

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Automotive

Suspension, valve, clutch and transmission springs.

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Medical

Precision springs for devices, surgical instruments.

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Aerospace & Defense

High-reliability springs, specialty materials.

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Electronics

Micro springs, battery contacts, wire forms.

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Industrial Equipment

Heavy-duty springs for machinery, valves, pumps.

Get a Quote

Request a Quote

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Prefer to Email Your Drawing?

Send your drawings to sales@siamspring.com for a free engineering review.

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Siam Spring

Precision custom steel spring manufacturer in Thailand, serving US OEMs, engineers, and startups since 2017.

🇹🇭 Made in Thailand

Custom Steel Springs —
0.1 to 18mm Wire Diameter