Below is a list of Gratings manufacturers from Pittsburgh, Pennsylvania. Gratings are a type of covering or frame that features a textured surface created by holes, openings or a grid pattern formed by bars. They are used in a wide variety of industrial and commercial uses including in general buildings, production plants and sidewalks when perforated flooring is needed so that liquids and debris do not collect on the flooring, when solid flooring installation is difficult, and when increased traction and tread are needed for workplace safety. Aside from walkways, they are used for a number of barriers and building construction materials.