Mainka at a glance
Total output 2025
> 330
€ million p.a.
Founded
1895/1949
Branches
- Lingen (head office)
- Brunsbüttel
- Gelsenkirchen
- Cologne
- Münster
- Osnabrück
- Papenburg
- Wuppertal
Mainka employees
> 750
Accident statistics
Construction projects for chemicals, energy and logistics
We plan, construct, renovate and maintain industrial buildings safely, reliably and with many years of experience. Our focus is on complex projects in sensitive industrial environments such as chemical parks, power stations, refineries, energy infrastructure and large logistics sites.
Conversion of a Paper Machine
Conversion of a Paper Machine
For our client Nordland Papier GmbH, we carried out the comprehensive conversion of a paper machine. The project included earthworks, concrete and reinforced‑concrete works, façade works, as well as the full installation of the technical building equipment (TGA).
Key challenges included the creation of media‑tight surfaces and executing the works during ongoing operations. With more than 8,500 m³ of concrete and 700 tonnes of reinforcement, we delivered a facility that meets the highest requirements for precision and safety.
Figures and facts:
- Earthworks
- Sewer and pipeline construction
- Reinforced‑concrete works
- Finishing works
- Technical building equipment (TGA)
- Roof waterproofing / green roofing
- Façade works
- Formwork and reinforcement works
- Concrete construction
- Roadworks
- Work during ongoing operations
- Production of media‑tight surfaces
- Excavation planning
- Paving works
- Drainage systems
- Development works
| Customer | Nordland Papier GmbH |
|---|---|
| Location | Dörpen |
| Contract value | approx. €9 million |
| Main construction period | 12 months |
Similar references
Of our more than 750 employees, around 60% are construction site personnel, whom we train regularly. On average, we devote 2% of annual working hours to training.
For whom and why?
We generate more than 90% of our turnover in the chemical, energy and specialised logistics sectors. Customers from these sectors trust in our experience because we construct complex industrial buildings reliably and safely.
