tension spring - a professional spring manufacturer of custom springs and wire forms

various of custom wire forms

Extension spring

Extension spring also named tension spring, when are are made, they are wound tightly to store the energy and create a pulling force, usually there are hooks loops on each end of tension springs to pull other parts together with pulling force, if no hook or loop, there should be parts insert the springs and make solid connection.

Ends of extension springs

There are many types of ends to choose for your extension springs as below:

tension spring end type

Material of extension springs

The most common material of extension springs here are carbon steel, stainless steel and alloy steel, we usually have most of wire size steel in our warehouse, if not, we can purchase that material for your particularly, after all, we are located in the manufacturing base of China, we have Tons of steel suppliers stand by.

Surface treatment of extension springs

Our surface treatment service are outsource except oil treatment, that means we got more choice at lower cost, there are lots of surface treatment factories around us and we have worked together for many years, most of the surface treatment our customers required are below:

  • Oil
  • Painting
  • Electrophoresis
  • Oxidative black
  • Zinc coating(galvanizing)
  • Nickel coating
  • Powder coating with lots of colors to choose
  • Chrome coating
  • Darcrome coating
  • Others(upon on your requires)

Applications of extension springs

Extension springs are widely used in almost every manufacturing field, including
Trucking, agriculture, automotive,oil&gas,miming,military,construction,outdoor equipment,furnature,industry,power&hand,tools,electronics,railway,marine,telecommunications,engineering,robots and so on.

What need you do?

You need do nothing but only sending us a mail by just clicking the magic bottom you see as below!


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