Pipeline construction in open trench for gas, drinking water, wastewater, and district heating
DAU Rohrleitungsbau GmbH
19386 Lübz · Headquarters/Main OfficeNew on Amplifa
About DAU Rohrleitungsbau GmbH
DAU Rohrleitungsbau GmbH was founded in 1996 by Holger Dau and emerged from a family tradition in civil and pipeline construction. The company, based in Lübz (Mecklenburg-Vorpommern), is a pipeline construction company according to DVGW GW 301 and installs, maintains, and connects pipelines in open trench. The range of services includes gas supply lines in all pressures and nominal diameters, drinking water supply lines, wastewater pressure lines including pumping stations, and district heating lines; in addition, crossings are carried out by horizontal drilling. DAU Rohrleitungsbau GmbH is part of the DAU group, which also includes DAU Eisenbahn-, Straßen- und Tiefbau GmbH, allowing complex large-scale construction sites with multiple trades to be offered from a single source. Customers include public clients such as special-purpose associations, municipal utilities, and transport operators, as well as industrial companies. Around 50 employees realize an annual construction output of approximately 17–18 million euros.
- Site
- Lübz
- Processes
- Pipeline construction (open trench) – Installation, maintenance, connection according to DVGW GW 301, Gas supply lines (all pressures and nominal diameters), Drinking water supply lines (all pressures and nominal diameters), Wastewater pressure lines including pumping stations, District heating lines, Horizontal drilling crossings, Steel welding, Pipeline construction in open trench (installation, maintenance, connection)
- Materials
- Steel
- Certificates
- DIN EN ISO 9001:2021 (Business Management System BMS), DVGW GW 301 (Pipeline Construction Company), DIN EN ISO 9001 (BMS), DVGW GW 301
- Founded
- 1996
- Employees
- 50
- Industries
- Gas Supply, Drinking Water Supply, Wastewater Disposal, District Heating, Industry, Public Clients (Special-Purpose Associations, Municipal Utilities, Transport
- 01
Project preparation and construction planning
- 02
Earthworks and excavation (open trench)
- 03
Pipeline installation and steel welding
- 04
Connection, maintenance, and testing of pipelines
- 05
Pumping stations and system integration
- 06
Handover to the client
Materials and Processes
Steel
Material for pipelines and welding work in pipeline construction.
Locations
Lübz
DEHeadquarters/Main Office
- Materials
- Steel
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Pipeline construction (open trench) – Installation, maintenance, connection according to DVGW GW 301Assembly | – | – | – | – | – |
| Gas supply lines (all pressures and nominal diameters)Assembly | – | – | – | – | – |
| Drinking water supply lines (all pressures and nominal diameters)Assembly | – | – | – | – | – |
| Wastewater pressure lines including pumping stationsAssembly | – | – | – | – | – |
| District heating linesAssembly | – | – | – | – | – |
| Horizontal drilling crossingsEngineering | – | – | – | – | – |
| Steel weldingJoining | – | – | – | – | Steel |
Additional services
Reference customers
Quality and Certification
Work is carried out under a Business Management System (BMS) according to DIN EN ISO 9001. As a recognized pipeline construction company according to DVGW GW 301, pipelines are professionally installed, maintained, and connected.
| Evidence | Lübz |
|---|---|
| DIN EN ISO 9001 (BMS) | |
| DVGW GW 301 |
History
- 1996
Holger Dau founds DAU Rohrleitungsbau GmbH, which emerged from a family tradition in civil and pipeline construction.
- 2009
The management of DAU Eisenbahn-, Straßen- und Tiefbau GmbH of the DAU group is handed over to a graduate engineer (Dipl.-Ing.).