C Purlins Price Cold Bending Section Steel Struture Steel For Solar Energy Systems The C section structural purlins are mainly used for commercial applications but are just as cost effective to be used for smaller type garages and carports. It can also form part of the columns and rafters in these smaller applications made from galvanized or hot rolled black finish steel C section purlins come in different sizes and thicknesses to cater for your needs. We adopt advanced