State of the Art Heat Treatment

Heat Treatment is unseen and is the most important process in the coil spring manufacturing process. Hardening and tempering is completed by a very accurate electronically controlled furnace to eliminate breakage.

Formed on Precision Mandrels

Each coil is precisely placed by a programmable logic computer to achieve perfect pitch. This is very important in Variable and Progressive Rate Springs.

Shot Peened

Coils are shot peened to give longer life.

Precise End Configurations

Precise End Configurations

Design Technology

Dobinsons computers have a design that allows the spring to maximise what is expected of the spring:
* Better Load Carrying
* Better Handling
* Height Requirements
* Greater Towing capacity

Powder Coat Finish

The powder coat finish is baked on to give a lasting protective coat to help eliminate rust.

Fully Scragged and Load Tested

All coils are scragged 100% to eliminate subsequent spring sag and load tested to ensure that they meet and maintain the required specifications.