A653, Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process. National Association of Architectural Metal Manufacturers (NAAMM ...
Metal door frames, more commonly known as hollow metal frames, are used to hang, secure and latch swinging doors. Metal door frames are typically found in commercial applications, though they are ...