High Quality Solar Bracket Cold Rolled C Steel Strut Channel Purlins Solar Power Stent C purlin is made of high-quality galvanized steel or hot rolled black finish steel, rollformed to a certain length with holes punched to your specification.It is available in different sizes and material strengths to match the design specification of your project. The special tilt-in module, the clamp, and the system can be modified to be installed that make the installation easy and quick.