The Combined Nomenclature (CN), v1:2020
7226 91 91: Flat-rolled products of alloy steel other than stainless steel, simply hot-rolled, of a thickness of >= 4,75 mm, of a width of < 600 mm (excl. of tool steel, silicon-electrical steel or high speed steel)
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=82f0fee5-2769-43bc-83fc-79117ee135ae