6 Construction elements made of metal, namely, formwork in the nature of scaffolding, supports, wall panels, girders, brackets, structural parts therefor, and metal reinforcement materials therefor; metal forming systems for concrete and other curable construction materials comprised of metal modular casting forms; metal construction materials, namely, panel floor formwork made of metal for supporting concrete forms for use in construction; metal forming and shoring equipment for concrete construction, namely, metal molds, metal casting forms, and structural and component parts therefor; building materials, namely, metal modular panels and joints used as molds for forming walls, slabs, stairs, columns, windows, and doors in poured-in-place concrete structures; metal shoring systems, namely, beams, panels, bracing frames, and beam mounting fixtures; metal formwork; metal modular formwork, and metal components for use therefor, namely, standards, braces, ledgers, prop heads, support columns, girders, brackets, base collars, screw jacks, swivel bases and locking pins