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| Customization: | Available |
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| After-sales Service: | Yes |
| Standard: | ASTM, GB |
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| Product name | High carbon steel strips for rolling shutter spring using |
| Material | 65Mn,51Crv4,SK75,SAE1075,G80 |
| Hardness | 44-48HRC for hardened and tempered conditions. |
| Size | thickness 1.0mm-1.4mm, Width:30mm-120mm |
| Color | blue, bright, white, nature, polished |
| Edge | round, slit both sides, one side slit,the other side slit |
| Tolerance | thickness+/-0.01mm max; Width:+/-0.05mm max. |
| Application | rolling shutter springs |




