High-Strength Eave Strut Roll Forming MachineAutomatic Size-Change & Stacking System
Our High-Strength Eave Strut Roll Forming Machine is specially designed according to the customer-confirmed profile drawings and production requirements. This production line is suitable for manufacturing C-shaped eave struts made from high-strength galvanized steel, widely used in pre-engineered steel buildings, warehouses, and industrial structures.
The machine supports S350GD to S550GD high-strength steel, with tensile strengths ranging from 630 to 790 MPa and material thicknesses from 2 to 3 mm. The inner bending radius is precisely controlled at R3, ensuring excellent profile consistency and structural performance.
Production Process Flow
Decoiling → Feeding & Leveling → Punching → Pre-Cutting → Roll Forming → Automatic Stacking
The entire line is controlled by one central PLC system, enabling automatic operation, stable production, and repeatable accuracy.
Raw Material Specification
| Item | Specification |
|---|---|
| Material | High-strength galvanized steel |
| Grade | S350GD – S550GD |
| Tensile Strength | 630–790 MPa |
| Thickness | 2–3 mm |
| Inner Radius | R3 |
1. 5-Ton Double-Head Hydraulic Decoiler with Coil Car
The decoiling system is designed for heavy-duty coils and smooth feeding into the forming line.
| Parameter | Specification |
|---|---|
| Load Capacity | 5 tons |
| Coil Inner Diameter | 508–610 mm |
| Max Coil Outer Diameter | 1600 mm |
| Max Coil Width | 400 mm |
| Coil Car Type | Scissor-lift trolley |
| Motor Power | 5.5 kW |
2. Feeding, Leveling, Punching & Cutting Unit
This integrated section ensures flat material, accurate hole positioning, and precise cutting before roll forming.
| Item | Specification |
|---|---|
| Leveling Structure | 3 upper + 4 lower rollers |
| Leveling Shaft Diameter | 110 mm |
| Punching Stations | 5 stations |
| Punching Dies | 3 complete die sets |
| Cutting Method | Hydraulic pre-cutting |
| Hydraulic Power | 15 kW |
Punching patterns strictly follow the customer-approved drawings, guaranteeing perfect compatibility with steel building connections.
3. Roll Forming Section
The forming system is built for high-strength material and long-term stable operation.
| Item | Specification |
|---|---|
| Forming Stations | 16 stations + side rollers |
| Roller Material | D2 steel, hardness 58–60 HRC |
| Shaft Material | 40Cr steel, heat-treated |
| Main Motor | 30 kW servo motor |
| Drive System | Precision gear transmission |
| Size Change | PLC automatic adjustment |
| Size Range | 100 / 105 / 110 / 115 / 120 / 125 |
| Angle Adjustment | Manual |
| Power Supply | 380V / 60Hz / 3 Phase |
The servo-driven system ensures stable forming even when processing high-strength steel up to 3 mm thick.
4. Advanced Control System
A single main control cabinet manages the entire production line, enhancing operational efficiency and minimizing human error.
| Feature | Description |
|---|---|
| Control System | PLC + Inverter (Mitsubishi) |
| Upper Computer | Industrial PC with data storage |
| Data Management | Production data can be saved |
| Cabinet Branding | ZHONGTUO company information |
| Password Protection | Activated after 6 months (with warranty deposit) |
| Language Options | Chinese / English / Polish |
5. 12-Meter Automatic Stacking System
The automatic stacking unit improves productivity and ensures neat material handling after forming.
| Item | Specification |
|---|---|
| Stacking Length | 1.5 – 12 meters |
| Profile Compatibility | Supports two different shapes |
| Stacking Height | As per the confirmed layout drawing |
| Machine Color | Customizable (color code to be confirmed) |
Production Speed Requirement
- 15 seconds per piece
- 30 seconds per piece
Speed can be adjusted based on product length and punching requirements.
Why Choose This Eave Strut Roll Forming Machine
- Designed for high-strength steel S350GD–S550GD
- Fully automatic size change via PLC
- Stable performance for 2–3 mm thick material
- Accurate punching and cutting
- Servo motor + precision gear transmission
- Multi-language control system
- Integrated automatic stacking solution
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