Cangzhou Zhongtuo Cold Forming Equipment Co., Ltd. recently celebrated the successful start-up of its fully automatic Steel Frame C & Z Purlin Machine at an American customer’s facility. From the moment the equipment arrived through to final trials, the U.S. team was on‑site, witnessing each phase of installation and testing. “We couldn’t be more impressed by both the machine’s durability and the Zhongtuo team’s professionalism,” noted a spokesperson from the New York firm. “Integrating this purlin system into our production line will greatly boost our efficiency and output. We believe our collaboration with Zhongtuo will deliver lasting value to our operations.”

When choosing between C‑ and Z‑shaped purlins, keep these guidelines in mind:

• Steeply pitched roofs: Opt for Z‑shaped purlins. Their superior bending resistance under sharp inclines ensures that roof loads align with the section’s centroid, enhancing stability and load capacity.

• Low‑slope roofs and walls: C‑shaped purlins are ideal. These profiles are lightweight, easy to install, and cost‑effective—perfect for smaller spans with modest slopes.

• Continuous beam applications: Z‑purlins excel here, thanks to their lap joints, which allow them to form uninterrupted beams. This feature significantly boosts stiffness and structural integrity over long spans.
  

In essence, project specifics—roof pitch, span length, and need for structural continuity—should dictate your choice: Z‑purlins for steep or continuous‑beam setups; C‑purlins for simpler, low‑slope structures.

The flawless commissioning of this purlin line in the U.S. underscores Zhongtuo’s global ambitions and technical expertise. Leveraging advanced Siemens controls, the system delivered precise, high‑speed performance, with every functional metric meeting or exceeding contractual standards. From unloading to final validation, the Zhongtuo team’s efficiency and attention to detail were evident at every turn.

To learn more about Zhongtuo’s range of cold roll forming solutions, please visit:

• Official website: https://www.metalrollformer.com/

• YouTube channel: https://www.youtube.com/@zhongtuomachine/videos