This C Z purlin roll forming machine is designed for cold roll forming C and Z shaped steel purlins, which are widely used as structural supports in steel building roof and wall systems. It continuously processes steel coils into the required cross section profiles through a series of roller stations. This article covers C purlin roll forming machine, Z purlin roll forming machine, CZ purlin roll forming machine, and other purlin profile machines, so you can decide which fits your production line.

C Z Purlin Applications

C and Z purlins are common cold formed steel sections in steel structure construction.

C Purlin has a C shaped cross section with good bending resistance and easy installation. It is typically used in roof and wall systems of industrial plants, warehouses, and workshops as a primary supporting member.

Z Purlin has a Z shaped cross section, offering better continuity in overlapping structural applications. It is commonly used in large span roof systems where overlapping creates a continuous multi span beam effect, improving overall structural integrity.

C and Z purlins are widely used in:

• Industrial buildings

• Warehouses

• Workshops

• Exhibition centers and gymnasiums

• Steel structure roof and wall systems

U and M purlins also fall into the cold formed purlin category and are used in specific structural scenarios. More information on U/M is provided later in this article.

Choosing a C Z or Dedicated Purlin Machine

When selecting a purlin roll forming machine, customers need to evaluate their production requirements to decide between a dedicated machine or a combination machine.

C Purlin Roll Forming Machine

C purlin roll forming machines are specifically designed to produce C shaped purlins. If your product demand is mainly C purlins with relatively stable specifications and minimal profile changes, a dedicated C machine is a suitable choice.

 Z Purlin Roll Forming Machine

Z purlin roll forming machines are specifically designed to produce Z shaped purlins. If your product demand is mainly Z purlins for large span roofing projects, a dedicated Z machine is the right option.

C Z Purlin Roll Forming Machine

CZ purlin roll forming machines can switch between C and Z purlin production on a single piece of equipment. If you need to produce both profile types or frequently switch between them, a CZ combination machine offers flexible production capability.

C Purlin Roll Forming Machine

Overview

C purlin roll forming machines use continuous cold bending to process steel strip into C shaped sections. The main components include a decoiler, leveling unit, roll forming system, punching device, hydraulic cutting unit, and PLC control system.

The machine can be customized with forming rollers based on customer provided profile drawings to meet different cross section requirements. Profile dimensions, punching patterns, and cutting lengths can all be tailored to specific production needs.

Advantages

• The decoiler capacity meets regular steel coil production needs and reduces coil change frequency.

• Forming rollers offer good wear resistance for stable forming results over long production runs.

• The main shaft provides strong rigidity for smooth operation with less vibration.

• The PLC system with encoder handles length and quantity control automatically, reducing manual intervention and operating errors.

• Leveling and punching are integrated on one machine, cutting down process transfer time.

Production Process

The production process of C purlin roll forming machines follows this sequence: decoiling → feeding and leveling → punching → roll forming (12 stations) → cutting (stop cutting after forming) → output.

Parameters

The following are the technical parameters for the C purlin roll forming machine:

Z Purlin Roll Forming Machine

Overview

Z purlin roll forming machines are used to produce Z shaped steel purlins. Their basic structure is similar to C purlin machines, but the roller stations are designed specifically for the Z shaped cross section, forming the web, flanges, and lips accordingly.

The Z purlin machine is particularly suitable for large span buildings that require overlapping structural members. The equipment typically includes a decoiler, leveling unit, roll forming system, punching unit, cutting unit, and PLC control system. Profile dimensions, thickness, and punching requirements can be customized for each project.

Advantages

• Forming rollers offer good wear resistance for long continuous production runs.

• The main shaft provides strong rigidity to keep Z purlin forming dimensions stable.

• The PLC system with encoder handles length and quantity control automatically, reducing operator workload.

• Double row chain transmission runs reliably and reduces downtime for adjustment.

• 17 forming stations handle thicker material, meeting more project requirements for Z purlin thickness.

Production Process

The production process of Z purlin roll forming machines follows this sequence: decoiling (passive single head decoiler, 5 ton capacity) → feeding → punching (before forming) → roll forming (17 stations) → cutting (stop cutting after forming) → output.

The Z purlin machine roll forming process can be configured to match your production requirements.

Parameters

The following are the technical parameters for the Z purlin roll forming machine:

This Z metal purlin rolling machine configuration can be adjusted based on your specific profile requirements.For Z purline machine sale inquiries, please contact us with your profile drawings.

C Z Purlin Roll Forming Machine

Overview

CZ purlin roll forming machines can produce both C and Z purlins on a single line by adjusting the roller system. They combine the functions of both dedicated machines, using a PLC control system and mechanical adjustment mechanisms to switch between profile types. This suits operations that need to run both profiles.

The production line typically includes an automatic decoiler, feeding and leveling unit, punching system, main roll forming machine, cutting system, automatic stacker, and control system. Profile cross sections, size ranges, thickness, and punching patterns can all be customized based on customer requirements.

Product Configurations

The CZ purlin roll forming machine is available in two transmission types:

Standard CZ Machine (Chain Drive)

This configuration uses chain drive, with the main motor driving all forming rollers through a reducer and chains.

• Proven structure with straightforward maintenance

• Suitable for conventional speeds and medium to low output

Advanced CZ Machine (Gearbox Drive)

This interchange CZ purlin machine configuration uses gearbox drive, with each forming roller connected through gearboxes for rigid synchronization.

• High transmission rigidity with good roller synchronization

• Suitable for high speed continuous operation

The choice between these configurations depends on production speed, output requirements, and profile precision needs.

C Z Profile Changeover

One of the core features of the CZ purlin roll forming machine is its ability to switch between C and Z profiles.

Based on company technical documentation, the changeover works as follows:

• Width and height adjustment is done automatically through the touchscreen via PLC control.

• C/Z profile switching is achieved by manually overturning the last 13 roller stations to change between C and Z purlin forming modes.

The machine can handle different profiles and sizes, adapting to diverse production requirements.

How the Machine Works

The complete production process of the CZ purlin roll forming machine is:

Decoiling → Feeding → Leveling → Punching → Roll Forming → Cutting → Stacking

Here is how each step works:

1. Decoiling: The automatic decoiler uses hydraulic segment expansion and a speed sensor to synchronize with the main machine. It has a 5 ton load capacity, handles coil IDs of 450–550mm, and a maximum coil width of 500mm. Hydraulic motor power is 3KW, and transmission motor power is 3KW.
   

   

2. Feeding and Leveling: Steel strip passes through the feeding and leveling unit, where feed rollers, side rollers, and leveling rollers ensure the strip is flat before entering the forming section. The leveling rollers are configured as 3 upper and 4 lower, with a roller diameter of 75mm.
   

   

    

3. Punching: Punching is done before forming (hydraulic stop punching) with 4 stations: 3 punching stations and 1 pre shear station. Punches use Cr12MoV quench treated molds. Punch positions and quantities are set through the touchscreen.
   

   

    

4. Roll Forming: The strip goes through 18 forming stations, gradually cold forming it into the required C or Z section. Forming rollers are made from GCr12 with HRC58–60 hardness. Main shafts are Φ70mm and Φ88mm in 45# steel. The frame is welded H beam steel, and roller stands are cast steel.
   

   

    

5. Cutting: After forming, the hydraulic cutting system cuts to length (stop cutting). An Omron encoder measures length with a tolerance of 3000mm ± 1.0mm. Blades are made from Cr12MoV quench treated steel.
   

   

    

6. Stacking: Finished purlins are received by an automatic stacker, which uses a motor conveyor and electromagnet for automatic stacking. The stacker handles purlin lengths up to 12m.

Advantages

• One machine produces both C and Z purlins, removing the need to configure two separate machines.

• C/Z changeover is easy to operate, allowing flexible product switching based on orders.

• Servo motor drive responds quickly to start and stop, suitable for production with frequent switching.

• Touchscreen operation with Chinese and English interface helps operators get started quickly with less training effort.

• Punching and cutting are integrated into the production line, reducing downstream processing steps.

• Automatic stacking reduces manual handling and lowers worker fatigue.

• Size adjustment is controlled through the PLC, so changing specifications requires minimal manual adjustment.
  

Parameters

The following are the technical parameters for the CZ purlin roll forming machine:

This CZ purlin roll forming machine parameter table covers the standard configuration. Custom configurations are available based on your production requirements.

U and M Purlin Roll Forming Machines

U Purlin Roll Forming Machine

A U purlin (also called a channel section) has a U shaped cross section without inward turned lips, which distinguishes it from a C purlin. This profile shape makes it useful in certain structural applications.

A U purlin roll forming machine produces U shaped sections through cold roll forming. The basic production process is similar to C/Z machines: decoiling → feeding and leveling → roll forming → cutting. The machine can be equipped with forming rollers based on customer provided profile drawings.

Our company offers U purlin roll forming machines. Please contact us for detailed equipment configurations and technical parameters.

M Purlin Roll Forming Machine

An M purlin (also known as a Sigma purlin) has an M shaped or Σ shaped cross section with a distinctive mechanical structure. It is typically used in structural applications requiring higher section modulus. The profile is formed through continuous cold bending, and can be punched with anchor bolt holes as required.

An M purlin roll forming machine is a specialized cold forming line that integrates decoiling, cold forming, punching, and length cutting for automated continuous production.

Our company offers M purlin roll forming machines. Please contact us for more information on parameters and applications.

Multi Profile Combination

Some production requirements may involve multiple profile types including C, Z, U, and M. Whether different profiles can be combined on a single production line depends on the specific profile drawings, dimensions, material thickness, production requirements, and machine design.

If you need to produce multiple profiles on one machine, we recommend providing your profile drawings and production requirements so our technical team can evaluate feasible combination solutions and adjustment methods.

Real Machine Production and Customer Projects

Machine Running Video

The following video shows a CZ purlin roll forming machine in actual production, including the overall machine structure, forming process, and finished profile output.

Video link:

For more details about machine operation, please contact us with your specific profile drawings for technical discussion.

Customer Factory Visits and Service

We welcome customers to visit our factory for inspection and tours. You can see the machine manufacturing process and actual operation at our facility.

The following links show customer visits and after sales service records:

• Customer factory visit news:

  Empowering the Cold Bending Industry Belt: A Strategic Visit from KaoTuo

• Customer's Positive Review:：

Purlin Machine Support From Design to Production

We support you from technical consultation to after sales service.

Technical Communication and Solution Confirmation
After you provide profile drawings and production requirements, our technical team evaluates the solution and confirms the machine configuration to meet production needs.

Production and Testing
After machine production is complete, we conduct trial runs to check forming quality, punching accuracy, and cutting length compliance.

Installation Guidance and Commissioning
We provide installation guidance and commissioning support to ensure the machine is properly set up for production.

Operation Training
We train operators on daily operation procedures and basic maintenance.

Technical Support and After Sales
We offer technical consultation throughout the machine's service life, with warranty coverage and lifelong technical support.

Information Needed for Your Purlin Machine Solution

Before our technical team can design a machine solution, we need the following information from you:

With this technical information, our team can more accurately assess the right machine configuration for your needs.

Related Roll Forming Machines

Our company also offers the following related cold roll forming equipment:

Roofing Sheet Roll Forming Machine
Produces roof panels, corrugated sheets, and other roofing materials.

Floor Deck Roll Forming Machine
Produces steel floor decking for composite floor construction.

Stud and Track Roll Forming Machine
Produces light gauge steel framing members (studs and tracks).

Cable Tray Roll Forming Machine
Produces cable tray profiles for electrical installations.

Door Frame Roll Forming Machine
Produces door frame profiles for various applications.

Related Articles

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C Purlin Roll Forming Machine

Manual adjustment C purline, U purline rolling forming machine

Z Purlin Roll Forming Machine

Fully automatic Z purlin rolling forming machine

For more technical information, please contact us.

Frequently Asked Questions

What is the difference between C and Z purlins?

The main difference between C and Z purlins is in their cross section shape and structural behavior.

C purlin roll forming machines produce C shaped sections for simple span structures.

Z purlin roll forming machines produce Z shaped sections that can be overlapped for continuous multi span structures.

Can one machine produce both C and Z purlins?

Yes. CZ purlin roll forming machines have C/Z changeover capability and can produce both profile types on a single machine.

How does a C Z purlin machine change from C to Z?

The changeover is done through automatic width and height adjustment via the PLC touchscreen, combined with manual overturning of the last 13 roller stations to switch between C and Z profile forming modes.

What information is needed to configure a purlin roll forming machine?

Our technical team needs profile drawings, profile dimensions (height, width, lip), material type and thickness, punching requirements, cutting length, and production requirements to design the machine configuration.

Can multiple purlin profiles be produced on one machine?

Whether C, Z, U, or M profiles can be combined on one machine depends on the specific profile drawings, size ranges, material thickness, and production requirements. Our technical team can evaluate feasibility based on your actual drawings.

To learn more about the CZ purlin roll forming machine or other cold roll forming equipment, please send us your profile drawings and production requirements. Our technical team will provide recommendations and solution references.