The difference between ordinary purlins and heavy purlins

Jan 23, 2025

The difference between ordinary purlins and heavy purlins

1.5mm to 3.0mm C/Z purlins are different from 2.0mm to 4.0mm C/Z purlins, mainly in terms of their load-bearing capacity, applications, and structural strength. Here's a breakdown of the differences:

Where Each is Used

1.5mm to 3.0mm C/Z Purlins:

  • Small-scale projects like residential buildings, light commercial roofs, and small warehouses.
  • Areas with less wind or snow load requirements.
  • Projects where cost and weight are critical considerations.

2.0mm to 4.0mm C/Z Purlins:

  • Industrial and large-scale projects, such as factories, warehouses, and agricultural buildings.
  • Applications requiring long spans and high load resistance.
  • Suitable for areas with high wind or snow loads.

Advantages of 1.5mm to 3.0mm C/Z Purlins

1. Lightweight and Easy to Handle
Advantage: These purlins are lightweight, making them easier to transport, lift, and install compared to heavier purlins.
Impact: Reduces labor costs and installation time.

2. Cost-Effective
Advantage: Uses less material compared to thicker purlins (e.g., 2.5mm to 4.0mm), which lowers the overall cost of the project.
Impact: Ideal for budget-friendly construction without compromising on quality for light and medium-duty applications.

3. Adequate Strength for Light-to-Medium Loads
Advantage: Offers sufficient load-bearing capacity for roofing and wall systems in small to medium structures.
Impact: Suitable for residential buildings, small warehouses, and commercial structures.

4. Flexibility in Design
Advantage: Can be easily customized to various lengths, widths, and profiles (C or Z shapes) to suit specific structural needs.
Impact: Ensures compatibility with different construction projects and architectural designs.

5. Pre-Punched Holes for Fast Installation
Advantage: Many manufacturers supply pre-punched purlins, allowing quick and accurate alignment during assembly.
Impact: Minimizes installation errors and reduces time spent on-site.

6. Corrosion Resistance
Advantage: Often made of galvanized steel, which is resistant to rust and corrosion.
Impact: Ensures durability and longevity, even in outdoor environments.

7. Versatile Applications
Advantage: Suitable for various applications, such as:
Roofing supports for light roofs.
Wall girts for cladding systems.
Bracing in pre-engineered buildings (PEBs).
Impact: Makes them a popular choice across multiple industries.

Advantages of 2.0mm to 4.0mm C/Z Purlins

  • High Strength-to-Weight Ratio: Strong enough for heavy-duty applications while remaining lightweight for easy handling.
  • Versatile Design: Can be cut and customized for various spans and load conditions.
  • Ease of Installation: Pre-punched holes make assembly quicker and more efficient.

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