Construction and maintenance of pipelines, land cables, plants and hydraulic structures for the energy industry.
Bohlen & Doyen Bau GmbH
Wiesmoor (Headquarters)New on Amplifa
About Bohlen & Doyen
Bohlen & Doyen Bau GmbH is a service provider in the energy industry headquartered in Wiesmoor, East Frisia. Its key areas of work are the construction of pipelines, land cables and plants in the long-distance gas network, hydraulic engineering as well as horizontal drilling for trenchless pipe laying with rigs of 4 to 250 tonnes of pull force. The portfolio of services also includes plant construction in gas plant technology – from pressure regulating stations to hydrogen filling stations and power-to-gas plants –, civil and underground engineering works, hydraulic engineering for coastal protection and infrastructure, as well as pipeline and plant service for gas networks. In addition, the company offers non-destructive material testing (NDT). The company, which has around 700 employees (as of 2024), is represented at over 40 locations and implements projects with a construction volume of up to 50 million euros. Since 2019, the company has been part of Friedrich Vorwerk KG.
- Site
- Wiesmoor
- Processes
- Pipeline construction, Pipeline & plant service (gas networks and gas plants), Land cable construction (buried transmission networks, 80 km and more), Plant construction gas plant technology (pressure regulating stations, hydrogen filling stations,, Underground engineering (earthworks and underground engineering), Hydraulic engineering (coastal protection, energy transition, infrastructure), Drilling technology / trenchless laying technology (horizontal drilling), Non-destructive material testing (NDT)
- Materials
- Horizontal drilling (HDD), Non-destructive material testing
- Founded
- 1950
- Employees
- ca. 700 (as of 2024)
- Industries
- Energy industry, Energy supply and distribution, Gas networks, Electricity networks, Water and telecommunication networks, Coastal protection
- 01
Engineering and project development
- 02
Underground engineering / earthworks
- 03
Drilling technology (trenchless laying technology)
- 04
Pipeline, land cable and plant construction
- 05
Non-destructive material testing (NDT)
- 06
Pipeline & plant service
Processes and Technology
Horizontal drilling (HDD)
Trenchless laying technology with horizontal drilling rigs of 4 to 250 tonnes of pull force for economical pipe laying.
Non-destructive material testing
Testing of components and pipelines with modern, reliable techniques for safety in plant operation.
Locations
Wiesmoor
DEHeadquarters
- Horizontal drilling rigs (4–250 t pull force)
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Pipeline constructionEngineering | – | – | – | – | – |
| Pipeline & plant service (gas networks and gas plants)Engineering | – | – | – | – | – |
| Land cable construction (buried transmission networks, 80 km and more)Engineering | – | 80 km and more | – | – | – |
| Plant construction gas plant technology (pressure regulating stations, hydrogen filling stations,Assembly | – | – | – | – | – |
| Underground engineering (earthworks and underground engineering)Assembly | – | – | – | – | – |
| Hydraulic engineering (coastal protection, energy transition, infrastructure)Assembly | – | – | – | – | – |
| Drilling technology / trenchless laying technology (horizontal drilling)Assembly | – | – | 4 t – 250 t | – | – |
| Non-destructive material testing (NDT)Testing | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Horizontal drilling rig | – | – | Pull force 4 t to 250 t | – | Wiesmoor |
Additional services
History
- 1950
Founded as Bohlen & Doyen Bauunternehmung GmbH by Heinrich Bohlen and Heinrich Doyen in Wiesmoor (civil engineering, hydraulic engineering, pipeline and plant construction).
- 2007
Application for the opening of insolvency proceedings at the District Court of Aurich; subsequently taken over by CTP Invest.
- 2011
Part of SAG Deutschland; joint services for electricity, gas, water and telecommunication networks.
- 2014
Company renamed Bohlen & Doyen GmbH, shift of the business field towards energy services.
- 2017
Revenue of around 209 million euros; acquisition of the SAG Group by the French company SPIE.
- 2019
Sale of the offshore cabling division by SPIE; liquidation of the original company and carve-out into the newly founded Bohlen & Doyen Bau GmbH, which belongs to Friedrich Vorwerk KG.