1. Purlin specification 1) Material: cold rolled coil, hot rolled coil, galvanized coil. 2) Yield strength: Q235Mpa Q345MpaS350D. 3) NOTE: Punching holes on the picture are only for reference, can be designed according customers request. 4) Thickness 1.0-4.0mm 5) Product Spec Variable size C -Width in Any size within 80-300mm -Height in Any size within40-100mm -Lips in Any size within10-25mm & Variable size Z -Width in Any size within 80-300mm -Height in Any size within40-100mm -Lips in Any size within 10-25mm Inner Angel: 135°and 90° 6) Driven by gear box, more powerful 2. Flow chart Decoiler - rolling forming device - Hydraulic punching and cutting - product support frame