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Z and C Purlins

Z Purlins:

Shape:

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

Advantages:

  • 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.

C Purlins:

c-and-z-purlin

Shape:

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

Advantages:

  • 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.

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.

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