In architecture, structural engineering or building, a purlin (or historically purline, purloyne, purling, perling) is any longitudinal, horizontal, structural member in a roof except a type of framing with what is called a crown plate. (Quoted from wiki), as to the C purline, the shape is like the character C with lips and something for easy installation with the punching holes. The steel purlins are in turn supported by rafters or walls. Metal C Purlins are light in weight and perfect for simple span construction. C Purlin - Cee or C purlins are shaped like a squared-off letter C. They are often used for structural support in walls and as floor joists in addition to roofs. Profile and sizes range: Metal Cee Purlins are available in a wide variety of sizes and lengths. See
graph below for sizes of galvanized metal purlins.
The following is the application of c purlin steel.
Basic parameters of C purlin steel forming machine for your reference:
