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.
Structural Works for WBW4 / SGA1 (Hot Strip Mill / Continuous Casting Plant)
Structural Works for WBW4 / SGA1 (Hot Strip Mill / Continuous Casting Plant)
For our client thyssenkrupp, we carried out the construction of the WBW4 and SGA1 structures — a project with exceptionally high technical requirements.
Key challenges included the structural underpinning using DSM columns, the use of heavy‑duty support scaffolding with a load capacity of over 1,000 tonnes, and construction during ongoing operations.
In addition, we executed extensive concrete and structural engineering works, reinforced‑concrete construction, road construction and specialist foundation engineering with pile foundations.
The combination of complex structural requirements, precise execution planning and on‑schedule delivery makes this project a true milestone.
Figures and facts:
- Structural underpinning using DSM columns
- Heavy‑duty support scaffolding (> 1,000 t load capacity)
- Construction during ongoing operations
- Concrete and structural engineering
- Road construction works
- Reinforced‑concrete construction
- Specialist foundation engineering
- Pile foundations
| Customer | thyssenkrupp Steel |
|---|---|
| Location | Duisburg |
| Contract value | approx. €42 million |
| Main construction period | 23 month |
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.
