6 [ UNWROUGHT AND PARTLY WROUGHT COMMON METALS AND THEIR ALLOYS IN THE FORM OF BILLETS, RODS OR BLANKS; ] METAL BUILDING MATERIALS, namely, TUBE AND PIPES; [ METALLIC NON-ELECTRIC CABLES AND WIRES; BLANKS FOR MANUFACTURING METALLIC TUBES AND PIPES; METAL TUBES FOR USE IN THE FURTHER MANUFACTURE OF MACHINE PARTS; ] METAL TUBES AND PIPES FOR OIL DRILLING, THE OIL AND GAS INDUSTRY, [ THE CHEMICAL INDUSTRY, AND MECHANICAL ] AND THERMIC INDUSTRIES, NAMELY, TUBINGS AND CASINGS, LARGE TUBES FOR PIPELINES, THIN AND SMALL TUBES, [ STAINLESS STEEL TUBES OR ] TUBES OF SPECIAL STEELS, TUBES OF SPECIAL ALLOYS, [ FINNED TUBES,] TUBES FOR BUILDING AND [ PILES FOR FOUNDATIONS, TUBES FOR DECORATION, CURVES ] AND TUBULAR CONNECTIONS, TUBE COUPLING JOINTS [, COUPLING SLEEVES, COLLARS, AND FLANGES ]