Material |
High carbon steel : 77B / 82B |
Wire diameter |
5 mm /5.5mm /5mm /6.5mm /7mm /7.5 mm |
Inside diameter |
50.8mm -152mm |
Outer diameter |
325mm - 3500 mm
|
Surface |
Oiled Tempered / Black coated/Corrosion resistant
|
Usage |
Rolling door / garage door / industrial /Furniture |
Torison Spring for sectional door, black
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