Brake beams included in this class,

Metallic building materials - namely, framing members and complete framing systems; channels, angle irons; channel closure strips; nuts, bolts, studs, screws and washers, springs and spring clips; fittings and connectors; post bases and end caps; pipe and tubing clamps, clips, rollers and hangers; trapeze and swivel hangers; concrete inserts; hinges; stud fittings; door frames, jambs and headers; partition and window frames, mouldings and corner clips; threaded rods and couplers; raised floor adjustable screw pedestals; space frame structures; rolled and extruded metal sections; metal partitions and panelling