Product name
Garage door torsion spring winding system torsion spring garage door
Material
Carbon steel, spring steel
Surface treatment
Zinc Plating, Powder spraying, Chemical oxidation
Production time
7-14 days
Packing
Wooden box , Pallet
Application
Industry,Residential garage door,commercial rolling shutter door
Size
1 3/4'', 2'', 2 5/8'', 3 3/4'',5 1/4'',6''
Circles
More than 17000 times