Double Layer Roof Sheet Roll Forming Machine

Double Layer Roof Sheet Roll Forming Machine is an efficient solution designed to produce two different metal roofing profiles on one integrated roll forming system. 

The machine adopts a double-layer roll forming design, with:

Upper layer: 10 forming rows
Lower layer: 16 forming rows
Separate rolling design
Maximum forming speed: 12–15 m/min

The separate rolling design helps release internal stress from the sheet during forming, contributing to better profile shape and forming precision.  

This configuration makes the machine particularly suitable for manufacturers who need to produce different roofing profiles while keeping the production line compact.

Suitable for PPGI, PPGL & GL Coils
Material Thickness：0.3–0.5 mm

 Technical Specification:

Application	roof and wall panel
Forming Material	PPGI, PPGL, GL
Material Thickness	0.3–0.5 mm
Max. Coil Width	1250 mm
Decoiler	5 Ton Manual Decoiler
Decoiler Type	Passive
Upper Forming Rows	10
Lower Forming Rows	16
Shaft Diameter	Φ80 mm Solid
Shaft Material	45# Steel, Heat Treated
Roller Material	45# Forged Steel
Transmission	Double Chain
Forming Speed	12-15m/min

Key Features

1. Heavy-Duty Machine Frame 

The main forming machine uses a 350 mm H-beam frame with an 18 mm welded steel middle support plate, providing a solid foundation for continuous roll forming. 

The machine frame is reinforced with diagonal braces. After welding, vibration treatment and large-scale planer machining are used to improve the frame's rigidity and stability. 

3. High-Quality Forming Roller and Shafts

The forming rollers are manufactured from high-grade 45# forged steel and receive chrome-plated treatment.
The chrome layer is specified at approximately 0.05 mm, helping improve surface smoothness, hardness, wear resistance and corrosion resistance, contributing to longer roller service life. 

The forming shafts use:
Diameter: Φ80 mm solid shaft
Material: High-grade 45# steel
Heat treatment applied
The solid shaft design provides strong support for the forming rollers and contributes to stable operation. 

 

4. Smooth Material Feeding

The feeding section is designed to protect the surface of the prepainted steel coil while ensuring stable material entry.

It includes:

• Hand wheels for adjusting feeding width
• Four stainless steel rollers
• Three rows of orange plastic rollers
• Smooth coil feeding
• Reduced risk of surface scratching

These components help guide the material into the forming section smoothly and consistently.

4.Hydraulic Post-Cutting System 

The machine uses a hydraulic post-cutting system with GCr12 cutting blades with quenched treatment.
The cutting system is driven by a double-pillar cylinder structure, providing a stable solution for automatic cutting of finished roofing sheets. 

5.One-Layer / Double-Layer Flexible Operation

The machine is equipped with a clutch system that provides the option to operate only one layer at a time when required. This provides additional flexibility for production and helps reduce unnecessary operation of the forming system. 

 

6. PLC Control Systems

PLC: Siemens
Encoder: Omron
Electrical components: Schneider
Touch screen: Included
Operating language: English & Chinese, or according to customer requirements

Operators can set the required product length and production quantity directly through the control system. Aviation plugs are also used to simplify machine installation after delivery. 

 

Why Choose a Double Layer Roof Sheet Machine?

Two Profiles, One Production Line

The double-layer configuration allows two different roofing profiles to be integrated into one machine, making it a practical choice for manufacturers with multiple roofing sheet requirements.

Space-Saving Design

Instead of installing two completely independent roll forming machines, the double-layer structure combines the forming systems into one production solution.

Stable Heavy-Duty Structure

The H-beam frame, reinforced base, solid shafts and forged steel rollers provide a robust mechanical foundation for continuous production.

Professional Control System

Siemens PLC, Omron encoder and Schneider electrical components provide a reliable control configuration, while the touchscreen makes length and quantity settings convenient for operators.

Flexible Production

The clutch design allows the operator to choose whether to run one layer or both layers, offering greater production flexibility.

Whether you need to produce two different roofing profiles or want to save factory space while maintaining flexible production, this double-layer roll forming machine can be configured according to your profile drawings, material specifications and production requirements.

Send us your roofing sheet profile drawing and material specifications for a customized double-layer roll forming machine solution.