Manufacture of boilers, except central heating boilers

This class includes: - manufacture of boilers and other steam generators - manufacture of auxiliary equipment for use with steam generators, such as condensers, heat exchangers, superheaters, steam receivers, steam accumulators - manufacture of nuclear reactors, except isotope separators - manufacture of marine or power boilers - construction of piping systems, including further processing of pipes, usually to create pressure pipes or piping systems, as well as related design and construction work. Excludes: - manufacture of central heating radiators and boilers, see 25.21.0 - manufacture of boiler turbine installations, see 28.11 - manufacture of isotope separators, see 28.99