T8 T14 Double Layer Roll Forming Machine for Roofing Panels

T8 and T14 double layer roll forming machine customized for a Polish roofing panel manufacturer

ZTRFM CANGZHOU ZHONGTUO ROLL FORMING MACHINERY CO., LTD designed this T8 T14 Double Layer Roll Forming Machine for a customer in Poland who required two roofing profiles within one production line.

The machine integrates two roll forming systems into a single structure, providing a practical solution for manufacturers that need more profile flexibility without installing two complete machines.

It is equipped with a 5-ton electric decoiler, guided feeding system, dual roll forming units, Delta PLC control, hydraulic cutting, and receiving tables. The forming speed is up to 15 m/min, while the final roller configuration is customized according to the customer's T8 and T14 profile drawings.

Machine Specifications

*The final number of forming stations is confirmed according to the approved panel profile.

How the T8 T14 Double Layer Machine Works

The production process is straightforward:

Steel Coil → Electric Decoiling → Guide Feeding → Roll Forming → Hydraulic Cutting → Finished Panel

The 5-ton electric decoiler feeds the steel coil into the forming line. Its automatic sensing system coordinates coil feeding with the main machine, helping maintain a stable material supply.

The sheet then passes through the guide feeding section before entering the selected forming layer. Each layer has its own roller configuration for the required roofing profile.

During forming, the rollers gradually shape the flat steel sheet into the T8 or T14 profile. The PLC system controls the production parameters and works with the encoder feedback system to monitor feeding length.

Once the preset length is reached, the hydraulic cutting system cuts the finished panel. The specified cutting accuracy is ±1 mm per 3 m.

The finished sheets are discharged onto two receiving tables, each approximately 3 m long and 1 m wide.

Key Features

Two Profiles in One Machine

The main purpose of a double layer machine is to combine two profile production systems into one equipment structure. This allows the customer to manufacture T8 and T14 panels without purchasing two independent roll forming lines.

Compact Production Layout

Integrating two forming systems helps reduce the equipment footprint compared with installing two separate machines. This is particularly useful where workshop space is limited.

Stable Forming Structure

The machine uses a welded steel structure, 45# steel Ø75 mm shafts, and chrome-plated forming rollers. The forming system is designed for stable sheet movement and consistent profile forming during continuous production.

PLC-Based Operation

The Delta PLC and touchscreen provide centralized control of production parameters. Multiple orders can be entered for continuous operation, while encoder feedback assists with accurate panel length measurement.

Hydraulic Cutting

The post-forming cutting system uses a pillar-type hydraulic structure and GB-Cr12 heat-treated cutter. The hydraulic system is designed to provide clean and consistent cutting during production.

Designed for the Customer's Profile

Roll forming machines are not standard “one-size-fits-all” equipment. The roller geometry and forming stations need to match the final roofing profile.

For this reason, ZTRFM develops the T8 and T14 forming systems according to the customer's approved drawings.

The main information normally required includes:

• Profile drawing
• Effective panel width
• Rib height and shape
• Material thickness
• Coil width
• Steel grade
• Required panel length
• Production speed

Based on these requirements, the forming rollers, station arrangement, feeding system, and control parameters can be configured for the customer's production needs.

Typical Applications

This type of double layer roll forming machine is suitable for manufacturers producing:

• Metal roofing panels
• Corrugated roofing sheets
• Trapezoidal roofing panels
• Customized construction panels
• Steel building roofing systems

The machine can be particularly useful for manufacturers that need to offer multiple roofing profiles while maintaining a relatively compact production line.

An automatic stacker can also be added when automated finished-panel handling is required.

Frequently Asked Questions

What is a double layer roll forming machine?

It is a roll forming machine that integrates two independent forming systems into one production line. Each layer can be configured for a different roofing profile.

Can this machine produce both T8 and T14 panels?

Yes. This machine is designed specifically for T8 and T14 roofing profiles. The final roller design is based on the customer's profile drawings.

What is the maximum forming speed?

The designed forming speed is 0–15 m/min, depending on the selected profile and production conditions.

What is the decoiler capacity?

The machine uses a 5-ton electric decoiler with a coil width of up to 1250 mm.

Can the machine be customized?

Yes. Profile dimensions, forming stations, roller design, feeding configuration, control system, and other production requirements can be customized according to the project.

Conclusion

The T8 T14 Double Layer Roll Forming Machine is designed for roofing manufacturers that need two different panel profiles in a single production setup.

For this Polish project, ZTRFM combined dual profile forming, electric decoiling, PLC control, hydraulic cutting, and customized roller design into one compact production line.

The result is a flexible solution for manufacturers looking to expand their roofing product range while keeping equipment and workshop requirements under control.

Have a T8, T14, or other roofing panel profile? Send your drawing to ZTRFM for a customized roll forming solution