蒸汽锅炉的制造，但中央供热锅炉除外

This class includes: - manufacture of steam or other vapour generators - manufacture of auxiliary plant for use with steam generators: * condensers, economizers, superheaters, steam collectors and accumulators - manufacture of nuclear reactors, except isotope separators - manufacture of parts for marine or power boilers

This class excludes: - manufacture of central heating hot-water boilers and radiators, see 2512 - manufacture of boiler-turbine sets, see 2811 - manufacture of isotope separators, see 2829