product name
Custom Manufacturer Roll-up Doors Torsion Springs
species
Black torsion spring and galvanized torsion spring
Material
Steel, Carbon steel, Stainless steel, Alloy
Usage
Shutter door, garage door
Wire Dia
0.1-50mm, as your requst
Surface treatment
Zinc-plated, , Electrophoresis Coating , Oxide Coating
Certification
ISO 9001 :2008
Place of Origin
CN,Tianjin