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We work safe –
or not at all.

Mainka specializes in construction projects in safety-critical industries such as chemicals, energy, and logistics. With clear processes, trained personnel, and a safety culture that is put into practice, our accident rate is a fraction of the average for the construction industry.

Mainka at a glance

Total output 2025

> 330

€ million p.a.

Founded

1895/1949

Branches

8
  • Lingen (head office)
  • Brunsbüttel
  • Gelsenkirchen
  • Cologne
  • Münster
  • Osnabrück
  • Papenburg
  • Wuppertal

Mainka employees

> 750

Accident statistics

Services

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.

Reference

Turnkey construction of a new industrial hall

Concrete construction & civil engineeringTurnkey constructionPipeline constructionIndustrial maintenanceUnderground construction

Turnkey Construction of an Industrial Hall

For our client 3M Deutschland, we delivered the turnkey construction of a modern industrial hall. The project included earthworks, concrete and reinforced‑concrete works, façade works, as well as complete interior construction.

A key focus was the technical building equipment (TGA), which we fully planned and implemented. Equally important was the creation of media‑tight surfaces to meet the highest safety and quality standards.

With around 3,000 m³ of concrete, 250 tonnes of reinforcement, and approximately 3,500 m² of façade surface, we constructed an industrial hall that meets the highest requirements for functionality, safety, and technical performance.

Figures and facts:

  • Earthworks
  • Concrete works
  • Reinforced concrete works
  • finishing works
  • Drainage systems
  • Interior works
  • Production of media-tight surfaces
  • Work during operation
  • Technical building equipment
  • Facade works
  • Formwork and reinforcement work

The project included:

  • 1000 m³ excavated earth
  • 2.900 m³ concrete
  • 250 t reinforcement
  • 2.950m² formwork
  • 1.000 m² precast walls
  • 180 t steel construction
  • 3,300 m² facade
  • 400 m pipeline construction
  • 2,800 m² WHG storage areas
  • 650 m² EX floor coating
Customer 3M Germany GmbH
Location Hilden, Germany
Contract value approx. €7 million
Main construction period 12 months
References

Similar references

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Neubau Covestro Campus Lot 1 in Leverkusen – Beton- und Ingenieurbau
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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.

order structure

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.