6731: Flat-hot-rolled, thickn.:<3mm=>275mpa, >3mm=>355mpa

67311: Flat-hot-rolled, width>600mm, thickness>4, 75mm, coils 67312: Flat-hot-rolled, width>600mm, thickness<4, 75mm, coils 67313: Flat-hot-rol., 4faces, 600mm>wid>1250mm, th>4mm, coils 67314: Other flat-hot-rol., wid>600mm, thic>4, 75mm, no coils 67315: Other flat hot-rol., wid>600mm, thic<4, 75mm, no coils 67316: Flat-hot-roll., 4 faces, 150mm>width>600mm, not coils 67317: Other flat-hot-rolled, width<600mm, thickness>4, 75mm 67319: Other flat-hot-rolled prod., iron, steel, width<600mm 6731: Flat-hot-rolled, thickn.:<3mm=>275mpa, >3mm=>355mpa