Rolling Shutter Door Machine, Light Steel Keel Roll Forming Machine, Door Frame Roll Forming Machine manufacturer / supplier in China, offering Light Keel Roll Forming Machine of Low Labor Cost Due to Automation. Energy-Efficient Compared to Hot-Rolling, Light Keel Roll Forming Machine of High-Speed Production (10– 30 meters per minute) . Consistent Accuracy (tolerance ± 0.2mm) , Customizable for Different Keel Sizes and Shapes by Customer of Light Keel Machine and so on.