METAL ROLL FORMING MACHINE
Zhongtuo roll forming Systems is a "one-stop shop" for all your roll forming needs,enabling our customers to save time and money when buying roll forming machines,to help customers grow.
Zhongtuo roll forming Systems is a "one-stop shop" for all your roll forming needs,enabling our customers to save time and money when buying roll forming machines,to help customers grow.
For a big span roof roll building machine, panel cut quality and the connection between panels matter. A steady cut and a working seaming function affect panel installation and project delivery. Blade setup, cut quality, and the seaming function all affect production on a depot KR roof forming machine. The current lineup covers the 305, 680, and…
Contact: Elliot liu
Email: [email protected]
WhatsApp: 008615127728988
Detailed Content

For a big span roof roll building machine, panel cut quality and the connection between panels matter. A steady cut and a working seaming function affect panel installation and project delivery.
Blade setup, cut quality, and the seaming function all affect production on a depot KR roof forming machine. The current lineup covers the 305, 680, and 800 models. Speed, voltage, profile, and floor space can be adjusted to project needs.
A big span roof roll building machine produces large span roof panels. These panels cover building roofs.
The panels are installed on industrial buildings, logistics warehouses, agricultural buildings, and grain storage facilities.
Industrial buildings and warehouse roofing
Logistics centers and distribution stations
Agricultural barns and greenhouse structures
Grain storage and feed warehouse buildings

A big span roof roll building machine comes in the 305, 680, and 800 models, covering 26, 36, and 42 meter spans. Project selection also depends on panel profile, material, and production requirements, not span alone.





The 800 model uses full hydraulic drive, a 40HP diesel engine, and a detachable bending section. The 305 and 680 models use electric motor drive and Siemens PLC control.
All three models use Cr12MoV blades with heat treatment. The 305 and 680 models seam at 10m/min, and the 800 model seams at about 6m/min. A big span roof roll building machine can be configured around project needs for speed, voltage, profile, and floor space.

A big span roof roll building machine uses Cr12MoV blades on all three models. The blades receive heat treatment. Cr12MoV is a tool steel with impact and wear resistance.
Blade material is one factor in cut quality. Blade heat treatment, edge structure, and the cutting unit also affect the result.
On a depot KR roof forming machine, cut quality depends on more than blade material. Blade wear, cutting unit accuracy, panel thickness and material, and machine setup all affect the cut.
Worn blades may leave burrs or uneven cut faces. Do not judge blade condition by service time alone. Look at cut quality and the cut face. Do not blame every cut problem on blade material. A big span roof roll building machine performs best when blade condition and machine setup are checked together.

On a big span roof roll building machine, the 305 and 680 models use 3KW cutting power. The 800 model cutting unit runs on the full hydraulic system.
The cutting unit cuts the panel during production. The exact cutting structure and cutting method vary by model and follow the overall machine design. The forming, cutting, bending, and seaming sequence depends on the model configuration.

A big span roof roll building machine is configured per project. The table below shows the three models.
| Parameter | 305 Model | 680 Model | 800 Model |
|---|---|---|---|
| Total weight | Approx. 8T | Approx. 10T | Approx. 13T |
| Overall size (L×W×H) | 8800×2200×2080mm | 9500×2270×2400mm | 10000×2250×2200mm |
| Maximum span | 26m | 36m | 42m |
| Effective width | 305mm | 680mm | 800mm |
| Feed width | 600mm | 1000mm | 1250mm |
| Thickness range | 0.6 to 1.6mm | 0.5 to 1.6mm | 0.8 to 1.5mm |
| Roller stations | 13+2 | 13+2 | Configurable to customer needs |
| Blade material | Cr12MoV | Cr12MoV | Cr12MoV |
| Seaming speed | 10m/min | 10m/min | Approx. 6m/min |
| Drive system | Electric motor | Electric motor | Full hydraulic with 40HP diesel engine |
| Control system | Siemens PLC | Siemens PLC | Configurable to customer needs |
A depot KR roof forming machine is built to project requirements. Speed, voltage, profile, and floor space can be adjusted.
A no beam roof forming and curving machine can produce common roof panel profiles for different building projects. Examples are shown below.


Different profiles have different cross sections and effective widths. The 305, 680, and 800 models list effective widths of 305mm, 680mm, and 800mm. Profile availability depends on project span, material thickness, and roof coverage requirements.
Profile options can be discussed with the supplier. Specific availability depends on project requirements.
The cutting blade and the seaming function are two key points for cut quality and panel connection. The three models cover different project sizes.
If you are evaluating a big span roof roll building machine, send us your target panel profile, common material thickness, project span, and cut or connection requirements. We will help you review the blade setup, seaming speed, and machine model.
Contact: Elliot liu
Email: [email protected]
WhatsApp: 008615127728988
Contact Us For More Roll Forming Machine Detailed Information
You can contact us either through phone number 0086-15127728988 within our working hours, or send an email to [email protected], or send an inquiry form to us using "Inquiry Now" option. Our customer representatives will respond as soon as possible.