Industry code 43.221 · Trøndelag
Plumbing installation in Namsos
There are 9 active companies in plumbing installation in Namsos. No new companies have been registered in the last 12 months. Together they have 51 registered employees. The largest company is Grannes Vvs AS with 26 employees. The oldest, H O Sandberg AS, was founded in 1967. 89% are limited companies.
- Active companies
- 9
- New in the last 12 months
- 0
- Registered employees
- 51
- Share of limited companies
- 89 %
The largest companies in plumbing installation in Namsos
Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.
| # | Company | Org. no. | Employees | Revenue | Founded |
|---|---|---|---|---|---|
| 1 | Grannes Vvs AS | 976717015 | 26 | NOK 52 m | 1996 |
| 2 | Namsos Rør AS | 918637931 | 10 | NOK 9 m | 2017 |
| 3 | Weider Rør AS | 994079867 | 9 | NOK 20.2 m | 2009 |
| 4 | Proteq AS | 925448249 | 6 | NOK 9 m | 2020 |
| 5 | Jt Holding AS | 816696062 | – | – | 2016 |
| 6 | Gass & Energi AS | 826859652 | – | NOK 10.3 m | 2021 |
| 7 | Namdal Spyleservice AS | 835633012 | – | NOK 218.2k | 2025 |
| 8 | H O Sandberg AS | 924290854 | – | NOK 2.1 m | 1967 |
| 9 | Haugum Grøtting Rør & Vvs | 927016931 | – | – | – |
Newest companies in plumbing installation in Namsos
- Namdal Spyleservice AS5 Jun 2025
- Haugum Grøtting Rør & Vvs26 Apr 2021
- Gass & Energi AS24 Mar 2021
- Proteq AS7 Aug 2020
- Namsos Rør AS1 Mar 2017
- Jt Holding AS8 Feb 2016
- Weider Rør AS13 May 2009
- Grannes Vvs AS9 Sept 1996
- H O Sandberg AS19 Feb 1995
Frequently asked questions
How many companies in plumbing installation are there in Namsos?
The Register of Legal Entities lists 9 active companies in plumbing installation in Namsos. No new companies have been registered in the last 12 months.
Which is the largest company in plumbing installation in Namsos?
Grannes Vvs AS is the largest by number of employees, with 26 employees. The organisation number is 976717015.
How many people work in plumbing installation in Namsos?
The companies have 51 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 4 of the 25 largest companies have reported employees.
How long have there been companies in plumbing installation in Namsos?
The oldest active company, H O Sandberg AS, was founded in 1967. 89% of the companies are limited companies.
Explore further
Plumbing installation in nearby municipalities
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 43.221. Figures are updated continuously.

