1. Purlin Specification 1) Material: cold rolled coil, hot rolled coil, galvanized coil 2) Yield strength: Q235B,Q345B,S350D 3) NOTE: Punching holes on the picture are only for reference, can designed according customer's request. 4) Thickness: 1.0-3.0mm 5) Product Specification Variable size C Width: 80-300mm Height: 40-100mm Lip: 10-20mm Variable size Z Width: 120-300mm Height: 40-100mm Lip: 10-20mm Our company is specializing in CZ interchangeable purlin machine and Light gauge steel system for 15 years, we produce more than 30 sets machine every month. Quality is our culture, also is the soul of an enterprise. So please make assured. Time is gold, for you and for us, we have professional team work whom can make nice quality in proper time. Besides, our machines are sold well in Southeast Asia, Europe, South America and Middle East. Good responses from our long term application customers all over China and all over the world.