Profile: Duncan Bros., Inc. is a provider of of structural and miscellaneous steel fabrication and installation services. We have industrial and commercial structures, material handling systems, storage systems & bottle and plate glass furnace steel. We specialize in material handling and storage systems, structural steel for commercial and industrial applications, the cement industry, sand and gravel and mining industries, steel mills and refineries. We also serve for coal handling, asphalt plant, new roof tile plant and cogeneration plants.