What Sheet Metal Workers Do: Sheet Metal workers are unique in the construction industry as the only trade that designs, manu ... factures and installs our own products. These skilled craftspersons take ordinary types of flat metal and make them into specialized products for various duct and ventilation systems, as well as architectural and specialized metal fabrication. Members of the trade are proud of its special distinction: They not only build; they create. The term “sheet metal” refers to any metal that can be formed into flat pieces of varying thicknesses. Using specialized tools, sheet metal workers cut, roll, bend, and shape these pieces to make a wide variety of objects such as ductwork; airplane wings; car bodies; refrigeration units; medical tables and storage units; building facades; steel sheets; tubing; and signs. Metals used in the sheet metal industry include cold rolled steel, mild steel, tin, nickel, titanium, aluminum, brass, and copper. read more