Description: Class 6: Pipes and tubes of metal; iron ores; stainless steel and their alloys produced in the form of rods, pipes, tubes, sheets, plates, wires, welding wire, steel bars [ , slabs, billets, strips and foils ]
Class 11: Heating, cooling and drying apparatus for use in the sulphuric acid industry, namely, drying towers, absorption towers, acid coolers, [ heat exchangers, not being parts of machines, gas condensers, other than parts of machines, ] acid distributors being parts of drying, intermediate and absorption towers, strainers being parts of drying, intermediate and absorption towers as well as parts or components of the aforesaid goods
Class 37: [ Building construction; repair; installation of acid distribution systems in industrial plants ]
Class 42: [ Technical consultation services relating to the design of acid distribution systems in industrial plants and to the design of production facilities for handling of acids ]