Reaction pipes and tubes of metal for use in producing hydrogen; reaction pipes and tubes of metal; pipes and tubes of cast steel; pipes and tubes of metal; metal pipe fittings; iron and steel; deformed pipes and tubes of metal; metal junctions for pipes; metal flanges; pipe muffs of metal; elbows of metal for pipes; reaction pipes and tubes of metal for use in petrochemical plants; cracking pipes and tubes of metal for use in producing hydrocarbon; cracking pipes and tubes of metal for use in producing ethylene; non-ferrous metals and their alloys; metal ores; pipework of metal; alloys of common metal; reaction pipes and tubes of metal for use in producing hydrogen for industrial furnaces; reaction pipes and tubes of metal for pyrolysis furnaces for use in the petrochemical industry; cracking pipes and tubes of metal for pyrolysis furnaces for use in producing hydrocarbon; cracking pipes and tubes of metal for pyrolysis furnaces for use in producing ethylene; reaction pipes and tubes of metal for industrial furnaces.

Heat exchangers, other than parts of machines; pyrolysis furnaces; heating furnaces for industrial purposes; industrial furnaces; nuclear reactors; shaped fittings for furnaces; hearths; coolers for furnaces; kiln furniture [supports]; structural framework for ovens; kilns; freezers for industrial purposes; waste water treatment tanks; septic tanks; garbage incinerators; water purifying apparatus; drying apparatus for chemical processing; recuperators for chemical processing; steamers for chemical processing; evaporators for chemical processing; distillers for chemical processing; solar water heaters; radiators for industrial air-conditioning purposes; air-conditioning apparatus; air-conditioning installations; coils as parts of distilling, heating or cooling installations; boiler pipes for heating installations; pipes for heating boilers.