Structural Steel for the main building frame, including columns, beams, and trusses Steel decking for floors and roofs Stairways, ladders, and platforms for access and egress Handrails and guardrails for safety Pipe racks and supports for piping systems Equipment supports and foundations for heavy machinery Mezzanines and catwalks for additional floor space and access Miscellaneous metal items such as grating, trench covers, bollards, and ornamental metalwork.