Z and C Purlins

Resembling the letter “Z” with two flanges and a central web.


Resembling the letter “C” with a single flange and a web.


  • Cost-effectiveness: Simple design makes them affordable compared to Z purlins.
  • Ease of Installation: Lightweight and straightforward to handle and secure.
  • Space-saving: Single flange design utilizes less space compared to Z purlins, making them beneficial in certain scenarios.
  • Widely Available: Readily available in various sizes and materials from most steel suppliers.


  • Strength: Stronger than C purlins, offering better interlocking and load-bearing capacity, particularly at overlaps and joints.
  • Versatility: Easily overlapped to create continuous spans, reducing the need for additional supports.
  • Lightweight: High strength-to-weight ratio minimizes material usage and installation costs.
  • Durability: Often galvanized or pre-painted for enhanced corrosion resistance and longevity.

Key Differences

  • Strength: Z purlins are generally stronger, making them suitable for heavy loads and challenging spans.
  • Overlapping: Z purlins can be easily overlapped for continuous support, while C purlins typically require additional connections at joints.
  • Versatility: Z purlins offer wider application flexibility for both roofs and walls, while C purlins are primarily focused on walls and floors.
  • Cost: C purlins are generally more cost-effective due to their simpler design and manufacturing process.

Choosing the Right Purlin with Ackroll Industries

Ackroll Industries, a distinguished member of the Ackroll Steel Group, stands as a symbol of excellence in steel solutions. Choose Ackroll for your Z and C purlin needs, ensuring not just quality materials but a commitment to structural precision and customer satisfaction. Tailor your projects with Ackroll Steel Group, where strength meets innovation

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