Steel Coil Slitting Process: Width Tolerance & Edge Types Explained

Steel coil slitting converts wide master coils into narrower strips. Whether you produce roofing, pipe, or stamped parts, understanding slitting capabilities helps you specify the right product.

What Is Slitting?

A shearing process where a wide coil passes through rotary knives, producing multiple narrower strips. Handles 0.1-25mm thick, up to 2000mm wide, strips as narrow as 10mm. Speed: 150-300 m/min.

Width Tolerance

• Standard: +/-1.0 to +/-1.5mm
• Precision: +/-0.5 to +/-0.8mm
• Ultra-precision: +/-0.1 to +/-0.3mm

Edge Types

• Slit Edge: Standard cut, slight burr. General purpose.
• Deburred: Burr removed. Safety-critical applications.
• Rounded: Edge radiused. Spring steel, wire drawing.
• Trimmed: Both sides re-trimmed. Visible parts.

Quality Factors

Camber: Lateral deviation, standard 3mm/2m. Burr Height: Max 10% of thickness. Coil Set: Natural curvature from master coil.

How to Order

Provide: grade, master coil width/thickness, strip width + tolerance, edge type, quantity, and surface protection. CoreMetal supplies custom-slit strips in galvanized, stainless, carbon, and aluminum.