Chemical & Petrochemical

We have more than forty years' experience in the chemical and petrochemical industry and make it available to our clients in all areas of engineering.

From the initial idea through to the turnkey plant, we are your competent contact for all issues.


As a framework contract partner of numerous refinery operators, we offer our services in all areas of refinery engineering.

Whether basic, detailed or TAR planning & design - we are the right people for you to contact.




From the preparation of the route study and planning and design for new pipelines and relocation of existing pipelines to the final design for construction through to the planning and preparation of pig runs and holiday (coating defect) management - we will be pleased to assist you.

Power stations

One area in which we work is the planning & design of power plants. We have experience in all areas of power plant engineering, acquired with all kinds of different energy sources.

If you have any questions concerning power plant engineering, please contact us to find out which of our services can help you.



Life Science

We have many years of extensive expertise in the pharmaceutical industry.

We are there for you - whether to help you with planning and design or to advise you on special national and international standards.

Foundry & rolling mill


You can also make use of our experience in this area of industry. Whether planning and design, automation programming or coordination installation on site - we will be pleased to assist you with your projects.

Ingenieurgesellschaft mbH Gelsenkirchen

Since H&G HEGMANNS Ingenieurgesellschaft mbH was founded in April 1969, by Hans-Dieter and Gerhard Hegmanns, it has grown steadily.

As a reliable partner in all aspects of engineering, H&G HEGMANNS Ingenieurgesellschaft mbH has established itself in the planning & design, licensing and approval of chemical plants for the chemical, petrochemical, environmental engineering and pharmaceutical industries.

In 2008, H&G HEGMANNS Ingenieurgesellschaft mbH expanded with additional locations in Finland and Serbia