If you're building agricultural greenhouses, you know the pain of juggling multiple machines—one for the C-shaped film-fixing slot, another for the structural keel. That means double the floor space, double the investment, and often, double the scrap material piling up at the end of the line.

What if one machine could handle both profiles, eliminate waste entirely, and also carry the CE certification you need to sell into European markets without a headache?

That’s exactly what the C-shaped Slot-Keel Integrated Cold Roll Forming Machine delivers.

What Does This Integrated Machine Actually Do?

In simple terms, this is a roll forming line that combines two products into one continuous production process. The finished profile has a dual purpose:

As a film-fixing slot: It securely holds greenhouse plastic films in place, replacing the need for a separate C-channel.

As a supporting keel: It provides structural backbone for the greenhouse frame, offering strength and stability.

Instead of buying and operating two separate roll formers, you run one line, with one crew, on one section of your factory floor. The result is a single profile that your customers can use immediately for two critical functions.

How It Saves You Cost and Workshop Space

The entire line comes as a ready-to-run package:

1.Decoiling & Feeding Unit – keeps coil material flowing smoothly into the line.

2.Cold Roll Forming Unit – the heart of the machine where both slot and keel shapes are progressively formed in one pass.

3.Cutting Unit with Abrasive Wheel – high-speed cutting that matches the fast forming pace, producing zero scrap.

Here’s where the real shop-floor benefits show up:

No material waste. The abrasive cutting system is fast and clean. You don’t lose centimeters of material per cut, so every meter of coil becomes sellable product—no scrap bin needed.

Flexible cutting options. Abrasive wheel is standard for speed, but if your material or workshop setup demands a different method (like hydraulic shearing), the cutting unit can be customized to fit. You’re never locked into one approach.

Small footprint. Because it’s an integrated single line, the purlin machine takes up far less floor space than two separate roll formers. For companies growing fast in tight facilities, this is a game-changer.

High production speed. The line is designed to run continuously, keeping your output high even when order volumes spike.

Designed to Meet European Standards (CE Certified)

One of the biggest hurdles for manufacturers exporting to Europe is certification. We’ve taken that off your plate.

This integrated slot-keel roll former is fully CE certified. That means every safety guard, electrical component, and mechanical design meets EU directives. For you, it translates into:

-Smooth customs clearance.

-Reduced legal and compliance risk.

-Worker safety that aligns with European workplace standards.

And because the machine can be adapted to different cutting methods and material specifications, it’s built to handle the variety European buyers often demand—without asking you to re-engineer the whole line.

What This Means for Your Greenhouse Business

Imagine quoting a client who needs both film-fixing channels and structural keels. Instead of breaking down costs for two machines, two shipment containers, and two installation teams, you offer one compact line that ships faster, installs in less time, and starts making money almost immediately.

Your customers get a dual-use profile that simplifies their inventory and construction process. You get a production line that runs clean, fast, and with almost zero waste. It’s how you win deals on price, delivery time, and flexibility—all at once.

Ready to See If This Fits Your Profile Drawings?

Every greenhouse structure is a little different. Slot dimensions, keel widths, material thickness—they all vary. The best way to start is to send us your profile drawing. Our engineers will check compatibility and propose a roll forming solution tailored to your exact shape.