DN Steel Decking Architecks Metal Systems, Inc. is one of the affiliates of the DN Steel Group of Companies. DN Steel Decking, easily and quickly laid on a steel floor beams, serves as working platform to support construction activities and to carry freshly poured concrete. This eliminates the need of temporary forms. Available in 6 profiles – DN Steel Deck 1, 2 3, 4, 5 and Super Deck. 2023-09-05 Denver Editor