What is a purlin?
A purlin, historically known by various names such as purline, purloyne, purling, or perling, is a vital structural component within the framework of a roof.
It serves as a horizontal beam or bar responsible for providing essential structural support in a building, typically situated beneath the roof. Purlins can be supported by the building’s rafters or its walls, and while they are commonly found in metal constructions, they can also replace closely spaced rafters in wood-framed structures.
Function of Purlin in Building Construction
The primary function of purlins is to bear the weight of the roof deck, which is the surface layer of the roof, typically composed of wooden panels, plywood, or sheet metal. This roof deck is further protected with weatherproofing materials and often incorporates insulation.
Purlins come in various types, categorized based on the materials and shapes used in their construction, and they have versatile applications, including supporting structural walls or floors. Without purlins, the roof lacks a sturdy framework for the roofing material to rest on, underscoring their significance in the overall stability of a roof structure.
They are particularly common in metal buildings and are essential for ensuring the integrity and strength of the roof structure.
Types of Purlins Supported
Purlin Roll Forming Machine
The purlin roll forming machine is a fully automated production line designed to manufacture steel purlins used as structural components in industrial and commercial buildings.
These purlins come in various profiles such as C, Z, U, and Omega, and are commonly used in steel-framed structures, warehouses, solar panel mounting systems, and prefabricated construction.
Working Principle
The purlin roll forming machine operates by feeding galvanized or cold-rolled steel coil into a series of precision rollers that gradually shape the material into the desired purlin profile. After forming, the profile is automatically cut to length by a hydraulic or flying shear system based on programmable settings.
Production Line Configuration
| No. | Components | Quantity | Remark |
| 1 | 5T Manual decoiler | 1 set | Hydraulic decoiler can be added if required |
| 2 | Feeding and Leveling Device | 1 set | |
| 3 | Main machine for roll forming | 1 set | |
| 4 | PLC Control system | 1 set | |
| 5 | Hydraulic system | 1 set | |
| 6 | Press system | 1 set | |
| 7 | Post cut | 1 set | |
| 8 | Stacking | 1 set | Auto stacker can be added if required |
At XINNUO, we are committed to delivering high-performance metal roll forming machines tailored for global industrial needs. Our equipment offers reliable and flexible production capabilities to meet the demands of modern construction and manufacturing industries.
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