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Applications

Springs for the way
your product moves.

From automotive assemblies to medical devices and industrial machinery, we engineer springs around the load case, the environment and the assembly process.

Industries we serve

Six industries, one engineering approach

We start with the application — what the spring must do, where it sits and how it is assembled — then select the form, material and finish.

Automotive springs made in Thailand

Automotive

Suspension, seat recliners, fuel systems, brake and latch assemblies. Automotive quality management certification in progress.

Electronics and PCB springs made in Thailand

Electronics & PCB

PCB contact springs, battery contacts, connectors and device chassis, built for reliable electrical contact.

Medical device springs made in Thailand

Medical

Surgical instruments, diagnostic devices, pumps and hospital equipment, with material and finish control.

Telecom equipment springs made in Thailand

Telecom

Antenna hardware, network racks, connectors and outdoor cabinets for telecom infrastructure.

Industrial machinery springs made in Thailand

Industrial Machinery

Gearboxes, valves, pumps, conveyors and automation fixtures requiring durable, repeatable spring force.

Consumer product springs made in Thailand

Consumer & Home

Home appliances, power tools, toys, locks and daily-use products in high-volume programs.

How we work

Application first, spring second

The same four questions shape every program, whether it is a single prototype or a multi-year production order.

01

Load case

What force, at what length, and how often? This sets the wire, coil and heat treatment.

02

Environment

Corrosion, temperature and cleaning processes determine material and finish.

03

Assembly

End forms, tolerances and handling are designed around how the part is installed.

04

Volume

Annual quantity and ramp plan guide tooling, sampling and production scheduling.

05

Validation

Samples are checked against the drawing before volume release.

06

Production

Incoming, in-process and final inspection keep output consistent.

Typical parts

What we build for these industries

A single program often combines several product families — a compression spring, a wire form and a stamped plate, supplied together.

  • Compression, tension and torsion springs
  • Touch and contact springs for electronics
  • Wave and power springs for compact mechanisms
  • Shaped springs and wire forms
  • Stamping and spring plates

View all ten product families

Precision springs for medical devices
Precision parts for regulated and high-mix applications.

Application note

Valve springs for automotive engines

A valve spring is defined by the load it holds at installed height, the load at full lift and the cycles it has to survive — not by a catalogue size.

  • Petrol and diesel engines, intake and exhaust valves
  • Closed and ground ends, wound to the drawing
  • Load checked at installed height and at full lift
  • Fatigue testing in-house

Read the valve spring guide

Compression springs produced by AOFENG SPRING in Rayong, Thailand
Compression springs from the Rayong line. Valve springs are wound to the same form, with closed and ground ends.

Don’t see your industry?

If the application needs a spring, we can review it. Send the drawing or describe the load case.

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