14 COMMERCIAL IRON AND STEEL PRODUCTS OF BESSEMER OR BASIC OPEN-HEARTH MELTING--NAMELY, [ PIG IRON, STEEL INGOTS, STEEL BLOOMS, STEEL SLABS, STEEL BILLETS, STEEL SHEET BARS, STEEL WIRE RODS, STEEL TIE PLATES, ] STEEL [ PLATES AND ] SHEETS [ (BLACK, GALVANIZED, AND TERNE COATED) FLAT AND/OR CORRUGATED, AND TIN AND TERNE PLATE ]