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We build safely –
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

Mio. € p.a.

Founded

1895/1949

Branches

8
  • Lingen (Zentrale)
  • Brunsbüttel
  • Gelsenkirchen
  • Köln
  • Münster
  • Osnabrück
  • Papenburg
  • Wuppertal

Employees Mainka 2025

> 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.

Projects

Cologne, Germany

New construction of a test hall with administration building and a traversing hall

Turnkey constructionConcrete construction & civil engineeringUnderground constructionTraffic area constructionPipeline constructionIndustrial maintenance
Brunsbuettel, Germany

New construction of a laboratory and a sample storage hall

Turnkey constructionConcrete construction & civil engineeringUnderground constructionPipeline constructionTraffic area constructionIndustrial maintenance
Dormagen, Germany

New construction of a foil factory

Underground constructionConcrete construction & civil engineeringPipeline constructionIndustrial maintenance
Leverkusen

Renovation and redesign of the building complex

Pipeline constructionConcrete construction & civil engineering
Hilden, Germany

Turnkey construction of a new industrial hall

Concrete construction & civil engineeringTurnkey constructionPipeline constructionIndustrial maintenanceUnderground construction
Leverkusen, Germany

New construction tanker bridge TSA3

Concrete construction & civil engineering
Emden, Germany

New construction Gas Terminal Emden

Traffic area constructionUnderground constructionConcrete construction & civil engineeringPipeline construction
Leverkusen, Germany

Construction of the Covestro Campus Lot 1

Concrete construction & civil engineering
Lingen, Germany

Construction of a New Administration and Service Centre

Turnkey constructionConcrete construction & civil engineeringTraffic area construction
Dormagen, Germany

Turnkey Construction of a Production Plant for Industrial Gases

Concrete construction & civil engineering
Cologne-Niehl, Germany

Semi turnkey Construction of a Gas and Steam Turbine Power Plant

Concrete construction & civil engineeringTraffic area constructionPipeline constructionUnderground construction
Lingen, Germany

Turnkey construction of a multi-purpose arena

Turnkey constructionConcrete construction & civil engineering
Jemgum, Germany

Construction of a natural gas storage facility

Pipeline constructionUnderground construction

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.