National Steel Constructors, LLC (NSC) is a steel erection, rigging, millwrighting and metal cladding installation company with nationwide capabilities. NSC specializes in managing major, complex, fast-track projects including arenas, automotive assembly plants, convention centers; steel mills; power plants, airport facilities and aircraft assembly plants. Since 1998, NSC has consistently ranked in the top 12 of Engineering News Record's listing of Structural Steel Erection firms.