In the world of pre-engineered steel buildings (PEB), the integrity of the roof and wall systems depends on two primary structural components: C purlins and Z purlins. These horizontal beams support the weight of the roof sheets and transfer the load to the primary steel frame.
To produce these essential members at scale, manufacturers rely on the purlin roll forming machine. At Haixing Industry Group, we have spent 28 years perfecting our purlin machines, offering versatile solutions that power industrial construction across the globe.
Purlins are secondary structural members made from cold-formed galvanized steel.
A modern CZ purlin machine is a marvel of automation. Unlike older machines that required manual roller changes to switch sizes, our "Automatic Interchangeable" models can switch from C to Z profiles and adjust sizes (e.g., from 100mm to 300mm) in just a few minutes via the PLC touch screen.
The process involves:
When choosing a purlin roll forming machine, technical specifications are paramount:
For those also working on multi-story projects, our floor deck machines are the logical next step in expanding your structural catalog.
Choosing the right profile is critical for structural safety and cost-efficiency:
Detailed comparison can be found in our C vs Z profile guide.
Purlins are the "connectors" of a steel building. They are bolted to the primary rafters using "purlin cleats." Because our machines pre-punch the holes with extreme precision, the on-site assembly is like a giant Meccano set—fast, accurate, and requiring no on-site welding.
The demand for C and Z purlin machines is currently peaking in:
1. Can one machine produce both C and Z profiles? Yes. Our "CZ Interchangeable" machines can produce both profiles. The operator simply rotates a few roller stations or uses the PLC to switch between them.
2. What is the maximum thickness the machine can form? Our standard machines go up to 3.0mm, but we manufacture heavy-duty versions that can process 4.0mm or even 5.0mm steel for specialized structural needs.
3. Does the machine punch holes? Yes. Our machines feature integrated hydraulic punching units that can punch both the web and the flanges, with the positions controlled via the PLC.
4. Is it difficult to change sizes? Not with an automatic machine. You simply input the new dimensions (e.g., 200mm web) into the screen, and the machine adjusts itself automatically in about 1-3 minutes.
5. What kind of material should I use? We recommend hot-dipped galvanized steel (Q235 or Q355 / G450) to ensure the building remains rust-free for decades.
With 28 years of history, Haixing doesn't just sell machines; we provide structural solutions. Our purlin machines are engineered for the highest durability, ensuring your investment remains productive for decades.
Explore our full range of roll forming machines or learn more about Haixing — a trusted manufacturer since 1996 serving 150+ countries.
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