Ores; common metals and their alloys, in particular steels, stainless steels and other rustproof, acid-resistant and heat-resistant steels, nickel, titanium, zirconium, nickel alloys, titanium alloys and zirconium alloys; products made from the common metals and their alloys included in this class, in particular semi-finished products and finished rolled steel products made from the aforesaid metals and their alloys

Treatment of materials