ZT1600×4 slitting line is a high-efficiency, fully automated machine designed for longitudinal cutting of metal coils such as hot-rolled and galvanized steel. Equipped with a PLC intelligent control system, hydraulic shearing, tension control, and automatic recoiling units, the line ensures precise cutting, easy operation, and scratch-free surfaces. It can handle coil widths up to 1600mm and thicknesses ranging from 0.4 to 4.0mm, making it ideal for various industrial applications, especially as a front-end processing line for welded pipe production. With a compact layout (approx. 30×12 meters) and a total installed power of 300KW, this slitting line offers high performance, reliability, and cost-effectiveness
I. Operating Conditions
Power Supply: Voltage AC 380V; Frequency 50Hz
II. Equipment Purpose
This slitting line is mainly used for longitudinal cutting of steel coils, providing strip material for welded pipe production lines.
- PLC control system, hydraulic shearing, and localized automation via hydraulic units.
- Constant tension cutting (active or passive modes) adjustable by material and thickness; precise tension regulation.
- No scratches or surface damage on the steel strip.
- Optimized mechanical processes and short auxiliary production time for high efficiency and productivity.
III. Process Flow
Coil Storage Table → Loading Trolley → Decoiler → Straightening Head Machine → Pinch-Leveling Machine → Cross Cutting Shear → Transition Platform → Vertical Guide Rollers → Slitting Machine → Transition Platform → Tension Device → Recoiler → Unloading Trolley (Includes Scrap Edge Winder)
IV. Material & Output Specifications
4.1 Raw Material: Hot rolled strip, galvanized strip
4.2 Raw Material Dimensions:
– Coil Outer Diameter: Φ1600 mm
– Coil Inner Diameter: Φ508 mm
– Coil Width: 1200–1600 mm
– Strip Thickness: 0.4–4.0 mm
– Max Coil Weight: ≤15 tons
4.3 Application: The finished strip is primarily used as raw material for welded pipe production.
V. Finished Strip Specifications
| Technical Parameter | Value | Remarks |
| Slitting Speed | 0–60 m/min | Max speed does not apply to max thickness |
| Number of Strips | 4–15 strips | |
| Finished Coil Inner Diameter | Φ610 mm | |
| Scrap Edge Width | 10–20 mm | |
| Line Elevation Height | +900 mm | |
| Feeding Direction | Left or right (customizable) | |
| Width Tolerance | 0–0.3 mm | |
| Camber (Max) | ≤15 mm / 5m | |
| Coil Tower Shape | ≤10 mm | |
| Burrs on Strip Edges | ≤2.5% of thickness, ≤0.3 mm | |
| Strip Surface Quality | Scratch-free | |
| Total Installed Power | 300 KW | |
| Total Line Length | 26 m | |
| Floor Space Required | ~30 m × 12 m | |
| Production Time | 120 days |
VI. Equipment Configuration Highlights (Summary)
- Loading Trolley: Electric drive, hydraulic lifting, with double coil tables
- Decoiler: Hydraulic expansion, with brake and clutch
- Straightening Head: Hydraulic pressing and tilting knife
- Pinch-Leveling Machine: 2 Pinch + 5 Leveling Rolls, precision pressing
- Cross Cutting Shear: Hydraulic upward shear, used for head/tail trimming
- Vertical Guide Rollers: Dual rows, manual adjustment
- Slitting Machine: Main unit with DC 90KW motor, active/passive slitting
- Scrap Edge Winders: Two units, max speed 80 m/min
- Transition Platforms: With buffer pit and oil cylinders
- Tension Device: Hydraulic pressing, 5-roll structure
- Recoiler: Wedge-type expanding shaft, DC 160KW motor
- Unloading Trolley: V-block support, hydraulic lifting
- Hydraulic Station: Two pump stations, water cooling, 1000L tank
- Electrical Control: Includes PLC, DC drives, AC cabinet
VII. Energy Consumption
| Item | Consumption | Unit |
| Circulating Water | 0 | t/h |
| Compressed Air | 0 | Nm³/h |
| Electricity | 810 | kWh/ton |
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