Description

A Practical Solution for Flexible Purlin Production

If you’re producing C purlins for solar mounting systems or steel structure projects, you probably need a machine that can switch sizes quickly, run stable, and not over complicate maintenance.

This C70–250 automatic C purlin roll forming machine is built exactly for that.

It is manufactured for 1.0–2.5mm thickness 345Mpa material, supports automatic size adjustment on PLC control system’s touch screen, also automatic hole punch on line, So it is the full automatic C purlin machine for C70-250, Xiamen Beenew machinery has standard C70-250 purlin machine for 345MPa material or customized adjustable C purlin roll forming machine for 550MPa material.

 

 

What makes this C purlin machine so welcome for buyers?

1. Good for saving tyoe changing time: automatic size change + manual adjust sizes some times.
2. It can automatically adjust the bottom width, flange height and lip width.

That means:

Operatoro no need to change spacers manually
Faster switching between different sizes
Less breaktime during producing

If you handle kinds of steel construction projects or solar mounting system, these features alone will save a lot of time.

Servo motor system — more control, less trouble
The main motor is a 15KW servo motor, which gives you:
Better forming accuracy
Smoother operation
Faster response when adjusting sizes

Compared to traditional motors, it’s simply easier to control and more stable over long runs.

 

 

Online punching — done during production

The C70-250 purlin machine is equipped with 3 sets of hydraulic punching cylinders, so punching is completed during the roll forming process.

You can customize:
Hole positions
Hole sizes
Hole shapes

No need for secondary processing — everything is done in one line.

 

 

Simplified structure — no pre-cutting system

This model is designed without hydraulic pre-cutting, based on actual customer needs.

In practice, this means:

Lower cost
Easier maintenance
Fewer hydraulic components to worry about

 

Main Technical Details

Material thickness: 1.0 – 2.5 mm
Feeding: with guider
Driving system: gear / sprocket transmission
Forming stations: 14 steps
Forming speed: 20–22 m/min (without punching & cutting)

 

Structure & Components

Side wall thickness: 22 mm
Shaft diameter: 70 / 55 mm
Shaft material: 45# steel (precision machined)
Rollers: GCr15 & Cr12 (CNC processed, chrome coated)
Frame base: H350 steel

Power system

Main motor: 15KW servo motor
Hydraulic motor: 5.5KW

 

Where this C70-250 purlin machine is commonly used

This C purlin machine is a good fit for:

Solar mounting bracket production
Steel structure buildings
Workshops and warehouses
Light steel construction projects

If your business involves purlins for structural support, this automatic C purlin machine covers most common requirements.

 

Project Applications

 

Over the years, this C70–250 automatic C purlin roll forming machine has been widely used in different types of projects. Below are some typical applications for our buyers:

 

Solar Mounting Structure Project

Customer producing solar mounting brackets needed to handle multiple purlin sizes for different installation angles and over load capacity.

 

What they needed:

Frequent size changes

High line speed including hole punch

High punching accuracy for bolt connections

Stable production for long runs

 

Our solution:

PLC automatic size change to reduce setup time

3 punching cylinders ensured precise hole positioning, but can change different hole designs

Servo system improved line speed

 

Result:
They reduced size change time from 30–40 minutes to just a few minutes, and improved overall c purlin machine production efficiency well.

 

Steel Structure Warehouse

This project is suitable for large-scale industrial warehouse, requiring a high output C purlins for roof and wall support.

 

Key requirements:

Continuous production

Vertical angles and good shapes

Reliable purlin machine performance for continous producing

 

C 70-250 Purlin Machine performance:

Stable running at 10-20 m/min, different hole distance different line speed

No deformation on finished C purlins

Minimal stop during producing

 

Result

The customer completed the project on schedule and continues to use the C70-250 purlin machine for ongoing orders.

 

Pre-Engineered Building

A PEB contractor needed a flexible solution for different building designs.

 

Challenges:

Multiple C purlin specifications in one project

Tight delivery schedule

Need to reduce labor dependency

 

How the C purlin machine helped:

One automatic c purlin machine covered multiple sizes

Just simple manual operation for this c purlin machine

Reduced operator’s skill requirements

 

Result

The customer improved delivery speed and reduced labor costs significantly.

 

Light Steel Structure Housing

Used in light steel housing projects, where consistency and cost control are critical.

 

Customer focus:

Affordable purlin machine solution

Easy maintenance

Stable quality for different thickness

 

Machine Advantage:

Simplified structure for easier operation (no pre-cutting system)

Lower maintenance cost

Reliable long-term operation

 

Result

The machine has been running continuously with low maintenance needs.

FAQ – Things Customers Usually Ask

Can this machine really change sizes automatically?

Yes. The bottom width and flange height are adjusted automatically through the control system. No manual spacer change is needed.

What material can it handle?

It works with 345MPa galvanized steel, within 1.0–2.5mm thickness, if need machine for 550MPa or above, we can customize purlin machines,too.

Is punching included or separate?

Punching is fully integrated. The 3 hydraulic cylinders work during production, so there’s no need for a separate punching process.

Can I customize the hole design?

Yes, we can always customize kinds of hole shapes according to your engineer need. We can adjust hole size,hole shape, hole distance, and layout based on your drawings.

Why remove the pre-cutting system?

Some customers prefer a simpler purlin machine:

Lower cost
Easier maintenance
Fewer failure points

So this version is designed accordingly.

What about speed?

The whole roll forming speed is around 20–22 m/min without punching and cutting. Actual speed depends on the punching design.

Do you support installation and training?

Yes. We do, normally we give our support as below:
Online guide

Machine installation guidance
Overseas service if required