| Rørleggermester Olsen AS | Håvik | 2022 |
| Rørleggermester Ophus AS | Furnes | 2025 |
| Rørleggermester Ormestad AS | Sandefjord | 2016 |
| Rørleggermester Oven AS | Rygge | 2017 |
| Rørleggermester Per a. Mathisen AS | Rolvsøy | 2007 |
| Rørleggermester Pettersen & Sønn AS | Hyggen | 2023 |
| Rørleggermester Rolf Olsen AS | Alta | 2021 |
| Rørleggermester Rune Bøe AS | Stokke | 2020 |
| Rørleggermester Rune Haug AS | Sætre | 2023 |
| Rørleggermester Sigurdur Hjartarson AS | Gamle Fredrikstad | 2007 |
| Rørleggermester Steinar Aamodt AS | Kristiansand S | 2018 |
| Rørleggermester Stian Larsen AS | Bodø | 2012 |
| Rørleggermester Stig E. Nilsen AS | Os | 2006 |
| Rørleggermester Svein Olsen & Sønner AS | Beitostølen | 2000 |
| Rørleggermester Svendsen AS | Beitstad | 2020 |
| Rørleggermester T. Almankås AS | Sandefjord | 2020 |
| Rørleggermester Tage V Jensen AS | Fjellstrand | 1983 |
| Rørleggermester Thomas Andersen AS | Oslo | 2021 |
| Rørleggermester Thomas Thorvaldsen AS | Gamle Fredrikstad | 2023 |
| Rørleggermester Tom Tvedt AS | Tveit | 2005 |
| Rørleggermester Tommy Paulsen & Sønner AS | Langhus | 1989 |
| Rørleggermester Tor Andreas Olsen AS | Nordre Toten | 2021 |
| Rørleggermester Tor Dag Gulbrandsen AS | Førde | 2004 |
| Rørleggermester Torstein Solli AS | Oslo | 2001 |
| Rørleggermester Trond E. Madsen AS | Ålesund | 2005 |
| Rørleggermester Trond Nielsen AS | Bergen | 2024 |
| Rørleggermester Vest AS | Godvik | 2026 |
| Rørleggermester Åge K Haugerud AS | Kongsberg | 2001 |
| Rørleggermester-Lillestøl AS | Bergen | 2019 |
| Rørleggermesteren Oslo AS | Oslo | 2024 |
| Rørleggermestern AS | Gvarv | 2011 |
| Rørleggern Fauske AS | Fauske | 2001 |
| Rørleggern Hamar AS | Hamar | 2019 |
| Rørleggern Løten AS | Løten | 2000 |
| Rørleggern Stenvall AS | Mosjøen | 1995 |
| Rørleggerne J & L AS | Sundbyfoss | 2004 |
| Rørleggersenteret AS | Larvik | 2008 |
| Rørleggersenteret Trondheim AS | Ranheim | 2013 |
| Rørleggersentralen AS | Fiskarstrand | 1994 |
| Rørleggerservice AS | Spydeberg | 2024 |
| Rørleggerservice Askim AS | Askim | 2015 |
| Rørleggerservice Florø AS | Florø | 1993 |
| Rørleggerservice Notodden AS | Notodden | 2016 |
| Rørleggerspesialisten AS | Sandnessjøen | 2013 |
| Rørleggerteam AS | Melandsjø | 2006 |
| Rørleggerteam Holding AS | Hitra | 2013 |
| Rørleggertjenesten AS | Oslo | 2023 |
| Rørleggertjenesten Fredrikstad AS | Gressvik | 2023 |
| Rørleggertjenesten Spydeberg AS | Spydeberg | 2011 |
| Rørleggertjenester AS | Stjørdal | 2022 |
| Rørleggervakta 24/7 Bergen Kristiansand Skien Stavanger Trondheim AS | Oslo | 2018 |
| Rørleggervakta AS | Oslo | 1977 |
| Rørleggervakta Innlandet - Radon-Vvs AS | Ridabu | 2018 |
| Rørmann AS | Kolbotn | 2026 |
| Rørmark Rør Og Varme AS | Brønnøysund | 2020 |
| Rørmek AS | Bodø | 2012 |
| Rørmester Kompaniet AS | Haugesund | 2020 |
| Rørmester Kompaniet Rørfornying AS | Karmsund | 2023 |
| Rørmester Vest AS | Hylkje | 2026 |
| RØRMESTER1 AS | Nordby | 2008 |
| Rørmoen Bygg AS | Grimstad | 2020 |
| Rørmont AS | Sande I Vestfold | 2003 |
| Rørmontasje AS | Oslo | 2002 |
| Røroppdrag Og Gass AS | Barkåker | 2024 |
| Røros Elektro AS | Ålen | 2005 |
| Røros Fritidsbygg AS | Tynset | 2017 |
| Røros Malerservice AS | Røros | 2016 |
| Røros Opticon AS | Røros | 2013 |
| Røros Varme AS | Røros | 2015 |
| Røros Ventilasjon AS | Røros | 2026 |
| Røros VVS AS | Røros | 2000 |
| Rørostak AS | Haltdalen | 2024 |
| Rørpartner Com AS | Elnesvågen | 2004 |
| Rørpartner Varme & Sanitær AS | Oslo | 2025 |
| RØRPARTNER1 AS | Tiller | 2013 |
| Rørportalen AS | Sofiemyr | 2023 |
| Rørproff AS | Oslo | 2022 |
| Rørproffen Salten AS | Valnesfjord | 2018 |
| Rørprosjekt AS | Skedsmokorset | 2008 |
| Rørreven AS | Drammen | 2012 |
| Rørsenteret Kongsberg AS | Kongsberg | 2014 |
| Rørsentralen AS | Oslo | 2021 |
| Rørservice 24 AS | Oslo | 2025 |
| Rørservice AS | Rindal | 2020 |
| Rørservice Nesbyen AS | Nesbyen | 2008 |
| Rørservice Tynset AS | Tynset | 2007 |
| Rørservice Valderøy AS | Valderøya | 2009 |
| Rørservice Ørsta AS | Hovdebygda | 2022 |
| Rørseth Bygg AS | Vigra | 2024 |
| Rørspesialisten AS | Jar | 2007 |
| Rørspyling AS | Auli | 2022 |
| Rørstad Bygg AS | Volda | 2009 |
| Rørsystem AS | Finnsnes | 2004 |
| Rørteam AS | Valldal | 1997 |
| Rørteamet AS | Rygge | 2023 |
| Rørtec AS | Rakkestad | 1985 |
| Rørteft AS | Kjeller | 1995 |
| Rørtek Hammerfest AS | Hammerfest | 2022 |
| Rørtek Holding AS | Hammerfest | 2022 |
| Rørtek Mester AS | Moss | 2026 |