We are specializing in manufacturing garage door hardware,windows,handle,spring etc. various kinds of spring are available, We also can manufacture the spring according to your request

features:

Galvanized torsion spring&Non-galvanized torsion spring

DIN 17223 Zink thickness 9mm

Length of spring:500mm-3800mm

Diameter of wire:5.0mm-11.5mm

Torsion spring for automatic garage door