After-sale Service
Online technical support, Onsite Installation, Onsite Training, Onsite Inspection, Free spare parts, Return and Replacement
Place of Origin
Jiangsu, China
Product name
Garage door torsion spring
Type
Residential & Industrial
Size
1 3/4'', 2'', 2 5/8'', 3 3/4''
Thickness
207/218/225/234/243/250
Material
Carbon steel / Manganese steel
Finished
Antirust Oil/Dacromet coating/Electrophpresis coating/Powder coated
Function
For sectional door use
Hardware System
USA / EU standard