Alloyed steels; Alloys of common metals; Aluminum alloys; Brass alloys; Castings, foils, powder, and rolled, drawn or extruded semi-finished articles of copper or its alloys; Connectors of metal for pipes; Copper alloys; Copper pipes; Elbows of metal for pipes including those from alloy steel and titanium; Ferroalloys; Hardware, namely, metal brackets for general use; Industrial metal hoses; Pipe tubes of metal; Stainless steels; Tubes of stainless steel