Steel purlins are horizontal structural elements used in building construction to support the roof covering or wall cladding. They are typically made of steel and are designed to provide strength, stability, and load-bearing capabilities to the roof or wall system. Steel purlins are lightweight, durable, and resistant to corrosion, making them an ideal choice for various building types and climates. These structural components are available in different shapes, such as C-purlins and Z-purlins, and are commonly used in commercial, industrial, and agricultural buildings to provide structural support and stability to the overall structure.