Garage door springs(CE)

Garage door springs 1)Spring forgarage door ,industrial door 2)Galvanized or non-Galvanized 3)ISO9001 CE 4)Standard Packing Garage door spring :for garage door,industrial door mainly. Galvanized or Non-galvanized springs are available.Length of spring from 50mm-4500mm.Quenching treatment .Different kinds of doors adpot different extension spring. Calculation per door,depending on door weight and dimensions.Spring are fixed to size ,delived with span stripe,greased and packed in plastic. Some sizes of the Torsion springs Inside diam .Of spring(mm)Diam.Of wire(mm)Length of spring(mm)Weight(kg/pcs)505.0300016.5505.5300018.0506.0300020.0506.5325023.6676.0300027.1676.5300028.4677.0325033.4677.5300033.25956.5300039.2957.0300042.42957.5325049.5958.0325053.0958.5250043.7959.0300055.7959.5325064.21528.5300083.61529.0325092.01529.5275084.015210275088.5