6 Construction materials made of metal, namely metal cladding for construction and building, braces, and supports; portable structures made of metal, namely, stages and stage superstructures, namely, prefabricated platforms, scaffolds, frames for prefabricated platforms, staircases, ladders, structural support legs, structual support feet, structural support braces, structural support trussing, crash barriers made of metal for roads and stages, police guard barriers made of metal for crowd and traffic control, entrance guard barriers for crowd and traffic control, fences, curtain walls, metal wall panels for use as stage skirting and guardrails, all of metal; metal cable wire, metal pipes