Sectional Door Spring
High Carbon Steel
Industrial, Home Appliance
Hot Roll
72b. 82b. 60si2mn
10 Years Warranty
1-3/4", 2", 2-5/8"
Oil Tempered, Galvanized, Powder, Electrophoresis
1-3/4", 2", 2-5/8"
Torsion Spring, Extension Spring
5000 Paris Per Week
Left Hand & Right Hand
15 Days for a Container
Spring Fatigue Testing
Inner: Plastic Waterproof Film; External: Crate
Aluminum Alloy
Torsion Spring for Garage Door
Plywood Crate
Spring size can be customized
Wuxi, Jiangsu, China