1. Classification by Material
Alloy elements like manganese, silicon, and chromium are added to enhance strength, hardness, and corrosion resistance. These coils are used in high-strength components, tools, and machine parts.
2. Classification by Surface Treatment
Color-Coated Steel Coils:
3. Classification by Use
Food-Grade Steel Coils:
4. Classification by Production Process
Hot-Rolled Steel Coils:
Produced at high temperatures, featuring an iron oxide-covered surface.
Cold-Rolled Steel Coils:
5. Classification by Specification
Generally not exceeding 5mm in thickness, used in manufacturing instruments, car bodies, and furniture.
With thicknesses between 5mm and 25mm, these coils are used for containers, pipelines, and bridges.
Over 25mm thick, these are used in heavy-duty building structures and vehicle chassis.
