7 Machinery for Cold Roll Forming Sheet Metal-Namely, Uncoilers, Coal Loaders, Roll Forming Machinery, Flatteners, Slitters, Tensioners, Piercing Presses, Flying Shears, Die Accelerators, Sheet Stackers, Tube Mills, Pipe Mills, Scrap Ballers, Scrap Choppers, and Strip Sheet Painting Machines, and Pickling Machines