Product name | all sizes for rolling shutter blue Spring Steels Strips coil |
Material | 65Mn,51Crv4,SK75,SAE1050,SAE1055,SAE1075,G80,High carbon steel strip,Cold rolled tempered steel |
Hardness | 45-63HRC for hardened and tempered conditions. |
Size | thickness 0.08mm-3.00mm, Width:2mm-300mm |
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 |