14 STEEL PLATES AND SHEETS, [ IRON AND ] STEEL, METAL BARS [ AND BILLETS, ] ALLOY STEEL, TOOL STEEL, STRIP STEEL, SPRING STEEL, DRILL STEEL, MACHINERY STEEL, SCREW STEEL, BABBITT METAL, [ SOLDER, ] STAINLESS STEEL, CASTINGS OF [ MALLEABLE IRON, GRAY IRON AND ] STAINLESS STEEL, FORGINGS OF CARBON STEEL, ALLOY STEEL AND STAINLESS STEEL, AND COLD ROLLED STEEL