The Standard Industrial Classification (SIC) was replaced by the North American Industry Classification System (NAICS) starting in 1997, but several data sets are still available with SIC-based data. Both SIC and NAICS classify establishments by their primary type of activity. Foreman Fabricators is providing this information for your reference and convenience. The description for Architectural and Ornamental Metal Work contains, for example: “Establishments primarily engaged in manufacturing architectural and ornamental metal work, such as stairs and staircases, open steel flooring (grating), fire escapes, grilles, railings, and fences and gates, except those made from wire.”