Lubricating devices, namely power operated lubricant dispensers for machines; conveyor belts; slag processing and filtering machines, namely machines for processing and filtering slag; machines for transport and injection of pulverulent materials by pneumatic means in a tank furnace for iron and steel work or for the metal industry; slag granulating machines; equipment for steelworks, namely continuous metal casting machines, machines for recycling iron, machines for recycling steelmaking dust and sludge, machines for recovering valuable iron, zinc and other non-ferrous metal, machines for recycling non-ferrous residues, and recovering valuable metallic contents, machines for producing hot metal or pig iron from iron ore; machines for ladle treatment of cast iron and steel, namely injection lance handling devices, injection lance exchange manipulator, ladle tilting devices, gears and enclosed drives for industrial machinery, transmission gears for machines; crushing and screening machines and equipment, namely machines for recycling iron, machines for recycling steelmaking dust and sludge, machines for recovering valuable iron, zinc and other non-ferrous metal, machines for recycling non-ferrous residues, and recovering valuable metallic contents, machines for producing hot metal or pig iron from iron ore; machinery for changing blowing lances in the nature of an automatic lance changing machine dust-extracting machinery, namely dust separators all these goods intended for use in the iron and steel industry or in the metal industry