A reliable laser welded tube roll forming machine is essential for manufacturers that require high-speed, continuous production of accurately shaped steel tubes. Zhongtuo offers an integrated tube roll forming line designed to process steel coils into finished welded tubes through a streamlined and highly automated manufacturing process.

The complete system combines coil decoiling, strip joining, optional inline punching, roll forming, laser welding, tube straightening, flying saw cutting and finished tube collection. By integrating these processes into one continuous production line, manufacturers can improve productivity while maintaining consistent tube dimensions, weld quality and cutting accuracy.

This automatic tube making machine is suitable for producing rectangular, square and other customized welded tube profiles used in fencing, construction, furniture, industrial structures and general metal fabrication.

Advanced Laser Welded Tube Production Technology

Compared with conventional welded tube manufacturing equipment, a modern laser welding tube machine provides more precise and controlled welding performance.

During production, the steel strip is gradually formed into the required tube profile before entering the online laser welding section. The laser welding system creates a concentrated and stable welding zone, helping achieve a clean longitudinal seam with reduced heat-affected areas.

For galvanized steel applications, controlled laser welding is particularly beneficial because excessive heat can damage the zinc coating around the weld area. With appropriate welding parameters and mechanical extrusion/scarfing processes, the production line can achieve a cleaner appearance while maintaining reliable tube strength.

The result is a continuous manufacturing process capable of producing tubes with:

• Consistent cross-sectional dimensions
• Smooth longitudinal weld seams

Complete Tube Manufacturing Process

The production line is designed as an integrated system rather than a collection of independent machines. Each section is synchronized with the next to maintain continuous material movement and stable production.

Standard production sequence:

Hydraulic Decoiling → Strip End Shearing & Butt Welding → Inline Punching → Roll Forming → Laser Welding → Straightening → Flying Saw Cutting → Run-Out Table

1. Hydraulic Decoiling

The production line begins with a hydraulic decoiler that feeds the steel strip into the forming section.

A 3T + 3T dual-station hydraulic decoiler can be used to improve coil loading efficiency. Hydraulic expansion provides secure coil holding, while remote operation makes material preparation more convenient.

The dual-coil configuration also helps reduce downtime during coil replacement.

2. Strip End Shearing and Butt Welding

For continuous production, the end of one steel coil must be connected to the beginning of the next coil.

The strip end shearing and MIG/MAG butt welding system automatically prepares and joins the material. This allows the forming line to continue operating without requiring frequent manual reconnection.

This section is especially useful for high-volume tube manufacturing where production continuity is important.

3. Inline Punching System

When holes or mounting features are required, an inline punching unit can be positioned before the roll forming section.

High-strength Cr12MoV tooling can be configured according to the customer's required hole pattern and tube application.

This approach eliminates the need for a separate post-processing punching operation and helps improve overall production efficiency.

4. Precision Roll Forming

The steel strip then enters the roll forming machine.

The forming section gradually bends the flat strip through multiple roller stations until the required tube geometry is achieved. A 16-station cassette-type roll forming system can be configured for this production line.

The gearbox transmission provides stable power transfer, while the roller system is designed to maintain accurate forming throughout continuous operation.

For applications requiring multiple tube dimensions, servo-assisted adjustment can help simplify profile changes and reduce setup time.

5. Online Laser Welding

After the strip edges are brought together, the formed tube enters the laser welding section.

The 6KW online laser welding system provides concentrated welding energy and supports continuous longitudinal seam welding.

A multi-roller extrusion mechanism keeps the tube edges properly aligned during welding. External scarfing equipment can then remove excess weld material to create a cleaner surface.

This combination helps produce:

• Uniform weld seams
• Reduced welding deformation
• Smooth tube surfaces
• High production consistency
• Reliable mechanical strength

6. Tube Straightening

After welding, the tube passes through a straightening system to correct minor deviations generated during forming and welding.

A four-roll straightening configuration can help improve tube linearity and ensure the finished products meet dimensional requirements.

7. Servo Flying Saw Cutting

The finished tube is cut into predetermined lengths using a servo flying saw cutting system.

Instead of stopping the entire production line for every cut, the saw follows the moving tube during the cutting operation. This allows continuous production while maintaining accurate cutting dimensions.

For the described configuration, the cutting length can range from 2,000 mm to 6,000 mm, with a length tolerance of approximately ±1.0 mm.

8. Run-Out Table

Finally, the cut tubes are transferred to the run-out table for collection and subsequent bundling or packaging.

The automated material handling process minimizes manual handling and creates a more organized finished-product workflow.

Technical Specifications

Item	Specification
Decoiler Configuration	3T + 3T Dual Station
Maximum Uncoiling Width	500 mm
Roll Forming Stations	16 Stations
Roller Material	GCr12MoV
Shaft Diameter	Φ70 mm
Forming Speed	Approx. 5 m/min
Laser Welding Power	6 kW
Cutting Length	2,000–6,000 mm
Cutting Accuracy	±1.0 mm
Control System	Siemens PLC + Touch Screen

Machine specifications can be customized according to tube profile, material thickness, production capacity and customer requirements.

Siemens PLC Control for Smarter Tube Production

The automatic tube making machine uses a Siemens PLC-based control system to coordinate the major production sections.

Through the touchscreen interface, operators can set and monitor important production parameters such as:

• Tube length
• Production quantity
• Forming speed
• Welding parameters

The control system can also support automatic length calculation and batch production management.

Schneider low-voltage electrical components can be integrated into the control cabinet to provide reliable electrical performance and stable operation.

For international customers, an English/Chinese HMI interface can be supplied for easier machine operation and maintenance.

Applications of the Steel Tube Roll Forming Line

The versatility of this metal tube roll forming line makes it suitable for a wide range of tube manufacturing applications.

Fencing and Security

The machine can produce galvanized rectangular tubes for security fences, garden fences, perimeter barriers and other fencing structures.

Construction

Finished steel tubes can be used for structural frames, supports, partitions and other construction-related applications.

Furniture Manufacturing

Depending on the tube dimensions and material specifications, the equipment can manufacture steel profiles for furniture frames, shelving and other fabricated products.

Industrial Fabrication

The line can also be configured for general-purpose rectangular and square tube production used in machinery frames, equipment supports and metal structures.

Why Choose an Integrated Laser Welded Tube Production Line?

For high-volume tube manufacturers, production efficiency depends not only on forming speed but also on how smoothly each manufacturing process is connected.

An integrated laser welded tube production line provides a complete workflow from raw coil to finished tube. Automated coil joining reduces interruptions, precision roll forming maintains profile consistency, online laser welding improves seam quality, and servo flying saw cutting provides accurate finished lengths.

This integrated approach can help manufacturers:

• Reduce manual labor
• Minimize production interruptions
• Improve dimensional consistency
• Increase welding quality
• Reduce material handling
• Improve finished-product quality
• Simplify production management

Customized Tube Roll Forming Solutions

Different tube manufacturers may have different requirements for profile dimensions, steel grades, thicknesses, welding methods, punching patterns, production speeds and finished lengths.

Therefore, Zhongtuo can customize the tube roll forming machine according to the actual production requirements.

Get a Customized Laser Welded Tube Roll Forming Machine

A high-quality laser welded tube roll forming machine can provide manufacturers with a complete solution for continuous steel tube production, combining precision forming, online laser welding, straightening and automatic cutting in one production system.

Zhongtuo provides customized tube manufacturing equipment for different steel tube applications and production requirements. From profile design and roller tooling to electrical configuration and complete line integration, the equipment can be tailored to your production needs.

Contact Zhongtuo today to discuss your tube profile, material thickness, production speed and required tube length, and get a customized laser welded tube production line solution.

Other Models Available

Beyond the C/Z/U/W Purlin Roll Forming Machine, ZTRFM also provides a complete range of specialized cold roll forming solutions for different open-section steel profiles. Each machine is designed according to specific structural requirements, material thickness, and production applications.

From standard C and Z purlins to customized structural profiles, ZTRFM engineers develop reliable roll forming equipment with flexible configurations, including automatic size adjustment, punching systems, hydraulic cutting, and customized forming solutions. You can explore the detailed specifications, applications, and technical options of each model through the related product pages.

C& Z& U & W Purlin Machine

C Purlin Roll Forming Machine

The C Purlin Roll Forming Machine is specially developed for manufacturing C-shaped steel purlins used in modern steel structures. The machine continuously forms galvanized steel or carbon steel coils into accurate C profiles through multiple forming stations.

C purlins are widely applied as wall supports, roof supports, floor beams, and light steel framing components. ZTRFM provides automatic and customized C purlin production lines according to customers’ profile drawings, material requirements, and production capacity.

The Z Purlin Roll Forming Machine is designed for producing Z-shaped steel purlins with excellent strength and connection performance. Due to its convenient overlapping structure, Z purlins are especially suitable for long-span roofing systems and large steel buildings.

This machine can be equipped with punching units, automatic cutting systems, and customized size adjustment functions to meet different construction requirements. ZTRFM offers professional solutions for manufacturers requiring stable and efficient Z purlin production.

L Angle Roll Forming Machine

The L Angle Roll Forming Machine is designed for manufacturing L-shaped steel profiles used in construction and structural connection applications.

These L-shaped sections are commonly used for ceiling grid connections, wall and column finishing, edge protection, and various trimming applications. ZTRFM provides customized roll forming solutions according to profile dimensions and material specifications.

W Section Roll Forming Machine

The W Section Roll Forming Machine produces W-shaped steel profiles designed for special structural applications. These profiles provide excellent strength and stability, making them suitable for load-bearing roof systems and other steel framework projects.

With advanced cold roll forming technology, ZTRFM ensures accurate profile dimensions and consistent production quality for demanding structural applications.

Omega Section Roll Forming Machine

The Omega Section Roll Forming Machine produces Ω-shaped steel profiles, also known as top hat sections, which provide excellent strength-to-weight performance.

Omega profiles are commonly used in applications requiring higher structural performance, such as roofing systems, industrial frameworks, and special load-bearing structures. ZTRFM offers high-precision forming solutions for different thickness ranges and profile designs.

U Channel Roll Forming Machine

The U Channel Roll Forming Machine produces U-shaped steel channels with high dimensional accuracy and stable performance. These profiles are commonly used in non-load-bearing partition systems, ceiling frameworks, interior construction, and supporting structures.

According to different applications, ZTRFM can customize the machine with various forming stations, punching systems, and cutting methods to achieve efficient continuous production.

Custom Profile Cold Roll Forming Machine

For projects requiring special steel profiles, ZTRFM provides Custom Profile Cold Roll Forming Machines based on customer drawings and technical requirements.

With advanced technology, experienced engineers, and professional global service, ZTRFM provides reliable C/Z Purlin Roll Forming Machines that help customers improve production efficiency, reduce labor costs, and achieve long-term business growth.