zinc-plated right or lefthelix extension spring

LIHUAN spring facotry, specialize inkinds of spring manufactureand sales.

 We candesign for customer
Certificate:ISO9001:2000,ISO16949:2009

  Recliner extensionspring   is madefrom spring steel, such as 65Mn,  70#, 60Si2MnA, 55CrSi etc,Most of the materials are in store.The design is humanized, whenyou are seated in the recliner, you will feel defferent, andcomfortable. 

And wealso produce kinds of other small extension spring,  toolextension spring, and the surface treatment , we cando such as painting-drying, zinc-plated, electrophoresis,nigrescence and so on.   

Zinc-platedextension spring:

                                           stainlessspring, nigrescence extension spring :

Some size coil springs we have in stock. You can send usyour drawing or give us th specification, let us check.And we alsocan do as per your requested, the following draft for yourreference,