Roller Shutter Spring
- Steel Grade: 65Mn 50# T8A T10A 60Si2Mn
- Size: 0.3-2.0mm thickness 40-200mm width 3-6meter length
- Color: blue, black, blue grey, yellow, bright
- Finish: hardened and tempered, round edge, HRC45-48
- Packing: oiled, plastic film, sackcloth, pallets
- Application: shutter spring, garage door
- Other products: spring steel strip
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