Product Details Light gauge steel machine 1. Purlin Specification 1) Material: Galvanized coil, Aluminum-zinc coil 2) Yield strength: Q345,G550 3) Thickness:0.75-1.2mm 4) Product Specification 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.