UK SIC 2007 25300: Manufacture of steam generators, except central heating hot water boilers

Maps to NACE Rev. 2 25.30 and NACE Rev. 2.1 25.21. ISIC Rev. 4: 2513.

UK SIC 2007 code 25300 is "Manufacture of steam generators, except central heating hot water boilers". UK SIC 2007 follows NACE Rev. 2 at four digits and adds a national fifth digit, so the first four digits, 25.30, are the NACE Rev. 2 class "Manufacture of steam generators, except central heating hot water boilers". UK companies state one or more SIC codes when they file at Companies House, and the codes appear in the company record. In NACE Rev. 2.1 the matching class is 25.21, "Manufacture of central heating radiators, steam generators and boilers".

Conversion

Classification	Code	Label
UK SIC 2007	25300	Manufacture of steam generators, except central heating hot water boilers
NACE Rev. 2	25.30	Manufacture of steam generators, except central heating hot water boilers
NACE Rev. 2.1	25.21	Manufacture of central heating radiators, steam generators and boilers
ISIC Rev. 4	2513

What the class includes (NACE Rev. 2 notes)

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

What it excludes

This class excludes: - manufacture of central heating hot-water boilers and radiators, see 25.21 - manufacture of boiler-turbine sets, see 28.11 - manufacture of isotope separators, see 28.99

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UK SIC 2007: Companies House condensed list of the ONS classification (gov.uk, Open Government Licence v3.0), read 2026-10-05. NACE data: EU Vocabularies (CC BY 4.0). Information only.