The L Purlin Roll Forming Machine – Strong Support for Steel Structures is an automated production equipment that uses cold bending forming technology to continuously roll steel strips into L-shaped (angle steel) section purlins. Its finished product has a 90 ° right angle and two unequal or equally long flanges, widely used as auxiliary support and connecting components in steel structure buildings.

The equipment mainly consists of core components such as passive feeding rack, leveling device, punching device, forming host (including multiple sets of rollers), hydraulic cutting system, and PLC control system. After being led out from the feeding rack, the steel coil undergoes leveling, continuous punching, and multi pass progressive rolling forming. Finally, it is automatically cut to length according to the set length, achieving continuous batch production.

Core specification parameters (typical models):

• Applicable materials: hot-rolled steel strip, cold-rolled steel strip, galvanized steel strip (thickness 1.0-3.0mm, depending on the model)

• Forming speed: 6-15 meters/minute (adjusted according to the thickness of the sheet)

• Molding specifications: flange width 30-200mm (mold can be customized according to requirements)

• Control mode: PLC control system (brand options include Mitsubishi, Siemens, Schneider, etc.), touch screen human-machine interface

• Molding passes: 8-16 passes (designed according to the complexity of the profile)

 Application scenarios

L-shaped steel purlins are widely used in the following fields due to their simple structure, reasonable load-bearing capacity, and convenient installation:

1. Auxiliary support for steel structure buildings
Roof and wall purlin system: as a supplement to C-shaped or Z-shaped steel purlins, used for connection and support at edges, eaves, and corners.
Column bracing and slant support: bear the role of wind resistant column and horizontal bracing in the steel frame structure.
Tie rods and connectors: As connecting components between beams and columns, they enhance the overall integrity of the structure.

2. Photovoltaic bracket system (rapidly growing field)
Solar photovoltaic panel installation bracket: L-shaped steel is widely used in the bracket structure of ground photovoltaic power stations and roof distributed photovoltaics due to its simple cross-section and easy installation.
Tracking photovoltaic bracket: a rotating support and connecting component used for photovoltaic tracking systems.

Product Attributes :

Pattern diagram：

Core Features

1. High molding accuracy and precise angle control
The core quality indicators of L-shaped steel are the accuracy of 90 ° right angles and the flatness of the flange. High quality equipment adopts precision designed roll hole patterns, which are gradually formed through multiple passes to ensure that the steel strip is uniformly stressed during the bending process. The final product angle deviation is controlled within ± 1 °, and the flange is straight without distortion.

2. Flexible changeover, one machine with multiple specifications
Through adjustable roller gap design and quick change mold structure, one device can produce L-shaped steel purlins with various combinations of flange width and thickness. When changing specifications, there is no need for complex disassembly and assembly. Some models can even complete the changeover within 15-30 minutes, greatly improving production flexibility and meeting the needs of small batch and multi variety orders.

3. Integrated punching and cutting to reduce the number of processes
The equipment integrates a hydraulic punching device and a cutting system after forming, which can complete the stamping and cutting of the bottom mounting holes (round or long round holes) online. The common punching requirements for L-shaped steel, such as single or double holes on the bottom plate, can be completed in one go without the need for offline secondary processing, greatly improving production efficiency.

4. Strong structural rigidity, stable and reliable
The main frame is often made of heavy-duty welded steel structure or integral cast steel, which has good rigidity and strong anti vibration ability, ensuring stability in high-intensity continuous production. The transmission system adopts a hard tooth surface gearbox with precision bearings, which runs smoothly, has low noise, and has a long service life. The rolling mill is made of high-quality mold steel (such as Cr12, GCr15) that has undergone heat treatment and precision grinding, resulting in high hardness and good wear resistance.

Contact Us：

Although the L-shaped steel purlin forming machine has a relatively simple structure, it plays an indispensable role in the steel structure industry chain. Whether providing precise support components for photovoltaic brackets or stable skeleton materials for modern agricultural greenhouses, this equipment creates tangible value for users with its efficient, precise, and flexible performance. For enterprises looking to enrich their product line and expand their steel structure processing business, the L-shaped steel purlin forming machine is an ideal choice with moderate investment and stable returns.

If you need to learn more about the model configuration, technical parameters, or customized solutions, please feel free to consult and exchange further.