Want to know how the TDC Flange Roll Forming Machine efficiently produces HVAC duct flanges? In this video, we walk you through the entire manufacturing process—from loading the GI steel coil to forming reinforced TDC flanges with corrugation beading. See the 16-station roll forming line in action, including cutting and sealing mastic injection, and learn why this system is ideal for large-scale duct production with strong, durable joints.