Structural framing systems are used to build railings, carts, shelving, barriers, and other structures without requiring welding. The structures can be expanded or reconfigured as a facility's needs change. T-slot framing systems have fasteners and connectors that install onto aluminum framing profiles to assemble structures. Press-fit framing systems use plastic connectors and fittings that press into the ends of aluminum framing profiles to assemble structures without bolts or screws. Pipe railing and framing systems have slide-on fittings that connect lengths of pipe to assemble structures.