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Mar . 03, 2026 00:00
Slitting knives are the core cutting tools used in a slitting line to longitudinally cut wide steel coils into multiple narrower strips. They are installed on the slitter shaft and work together with spacers and rubber rings to ensure accurate strip width and clean edges.
In industries such as steel service centers, pipe manufacturing, automotive components, and metal processing, slitting knives directly determine cutting precision, edge quality, and production efficiency.

Slitting knives are widely used for cutting:
• Hot rolled steel (HR)
• Cold rolled steel (CR)
• Galvanized steel (GI)
• Stainless steel
• Aluminum coils
• Silicon steel
They are essential components in:
• Steel coil slitting lines
• Tube mill production lines
• Cut-to-length preparation processes
• Precision strip processing plants
For manufacturers running high-speed slitting lines, stable and durable knives are critical for continuous production.


| Item | Specification |
|---|---|
| Material | H13 / SKD11 / D2 / DC53 / Customized |
| Hardness | HRC 58–62 |
| Outer Diameter | 100–400 mm |
| Inner Diameter | Customized |
| Thickness Tolerance | ±0.003 mm |
| Flatness | ≤ 0.002 mm |
| Surface Finish | Precision ground |
| Application Speed | High-speed slitting lines |
(Custom sizes and materials are available according to customer drawings.)
Advanced CNC grinding ensures extremely tight tolerances. This guarantees accurate strip width and reduces edge burrs.
Premium tool steel combined with proper heat treatment improves wear resistance, reducing knife replacement frequency.
Designed for modern high-speed slitting lines, our knives maintain cutting stability even under continuous operation.
Longer working life means fewer shutdowns, reduced maintenance, and lower overall operational costs.
We provide material selection advice based on the steel grade (such as 1008, YS355, stainless steel, etc.) to ensure optimal performance.
High-quality slitting knives directly improve:
📏Strip edge quality
💎Dimensional accuracy
🧩Line stability
⚙️Production efficiency
⏳Equipment lifespan
Poor quality knives may cause burrs, camber, uneven edges, and frequent downtime. Choosing reliable slitting knives ensures your slitting line runs smoothly and delivers consistent output.
Strict raw material control
Professional heat treatment process
High-precision grinding equipment
Experienced technical team
Fast response and global export experience
Our slitting knives have been exported to multiple countries and are widely used in steel processing plants and tube mills. We focus on durability, precision, and stable performance.
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