Metallic pipes and tubes; Counterweight arbor assembly in the nature of a framework with weights in it made primarily of metal and also sometimes including non-metal parts for providing a counterweight for use assisting with the manually powered lifting by means of ropes, cables and/or chains of theatrical objects during the performance of theatrical productions; Metal components for metal protective and security window shutters, namely, slats, shutterboxes, side frames, end caps, crank handl...