• Call us: +49 (0) 2421 – 69 09 10 | Send an e-Mail: info@weyer-gruppe.com

About us

We have been a group of companies in the field of process plant engineering and plant safety since 1976 with over 170 permanent employees in Germany, Austria, Poland and Switzerland. Every year, the weyer group completes over 1,000 projects for customers from the chemicals, pharmaceuticals, mineral oil, supply and disposal sectors as well as associations and authorities.

Our Values

In every respect. allround. smart. Our values are the focus of our corporate culture. They shape our common identity at the weyer group and guide us every day.

  • Quality forms the basis for our long-term existence. Therefore, we do not see it as an end in itself, but the foundation of our economic existence.
  • Client focus – Client support and care is very important to our company, and our primary goal is the satisfaction of our clients.
  • Further training our employees – Our employees are our company’s capital. In order to be able to maintain or expand our position in the market, our employees receive regular further training and always kept up-to-date on the latest technology at all times.
  • Friendliness is a top priority at our family company – flat hierarchies and short decision-making paths are lived, optimised and enhanced on a daily basis at the company group.
  • Tolerance and cultural diversity are qualities we experience in dealing with one another – regardless of origin, age, gender, belief or sexual orientation.
    Everyone is welcome here.
  • Healthy growth shapes our company group of – the weyer group grows through innovation. And we are getting better and better every day because of the superior quality of our workforce and the expert knowledge of our employees.
  • In our group, occupational safety is an important building block for a safe, healthy and competitive workplace. Our goals are the safety and health of all employees, the safe performance of assigned tasks, and satisfied and motivated employees.


The history of the weyer group


Foundation of the “Horst Weyer Büro für Verfahrenstechnik”


Foundation of PROBIOTEC GmbH


Foundation of Dahlhoff & Partner GmbH


Merger of the “Horst Weyer Büro für Verfahrenstechnik” and Dahlhoff & Partner GmbH and renaming as horst weyer und partner gmbh


Foundation of Weyer und Partner (Schweiz) AG


Foundation of weyer IngenieurPartner GmbH, formerly Großmann & Partner GmbH


Co-founding of the IBExU Institut für Sicherheitstechnik GmbH by Horst Weyer (not a member of the weyer group)


Foundation of BDO Technik- und Umweltconsulting GmbH


weyer group entered into the trademark register


Foundation of weyer akademie gmbh, formerly Weyer Quadflieg Prüfgesellschaft


Foundation of As-U Gamerith-Weyer GmbH


Foundation of Weyer Polska Sp. Z.o.o.


CTE Chemietechnik-Engineering GmbH joins the weyer group

The weyer group in figures








Projects a year

Structure of the weyer group


Schillingsstraße 329, D-52355 Düren
Phone +49 (0) 24 21 – 69 09 1 – 0
Fax +49 (0) 24 21 – 69 09 1 – 201
E-mail: info@weyer-gruppe.com

  • “Dust” Working Group
  • Federal Logistics Association
  • Technical committee for waste treatment and the recovery of recyclables
  • Technical committee for innovation management and future research
  • Society of German chemists | Chapter: “Analytical Chemistry” | “Process Analytics” Working Group
  • IHK Aachen | Honorary Position
  • ProcessNet Specialist group for waste and resource recovery (FGr-AuW) | Waste Management Technical committee
  • ProcessNet Specialist community for plant and process safety | “Effects of substance and energy release” Technical Committee
  • ProcessNet Specialist community for plant and process safety | “Risk Management” Technical Committee
  • ProcessNet Specialist community for plant and process safety | “Safety-relevant design of chemical plants” Technical Committee
  • ProcessNet Specialist community for chemical reaction technology | “Technical Reaction” Working Committee
  • ProcessNet Specialist community for particle technology and product design | Chapter; “Mechanical liquid separation“
  • ProcessNet Specialist community for process, apparatus and plant technology | “Computer-Aided plant planning” Working Committee
  • ProcessNet Specialist community for process, apparatus and plant technology | “Model-based process development and optimisation” Working Committee
  • ProcessNetSpecialist community for sustainable production, energy and resources (SuPER) | “Gas Cleaning” Specialist Group
  • ProcessNet Specialist community for fluid dynamics and separation technology | Thermodynamics Specialist Group
  • VDI Association of German Engineers: Chair of the guidelines committee “VDI 4060 – Integrated management systems”
  • VDI Association of German Engineers: Member of the guidelines committee “VDI 4055 – Operational safety management”
  • GFPA German Fire Protection Association(vfdb)
  • VIV Working group on occupational safety
  • VIVWorking group for environmental protection officers
Learn more here

Güterstrasse 137, CH-4002 Basel
PO Box, CH-4002 Basel
Phone: +41 (0) 61 683 26 00
Fax: +41 (0) 61 683 26 11
E-Mail: weyer-schweiz@weyer-gruppe.com

  • ECO SWISS, Swiss organisation for the environmental protection, occupational safety and health protection economy
  • SVUT, Switzerland. Environmental technology association
  • SVTI, Switzerland. Technical inspections association
  • ISPE, International Society of Pharmaceutical Engineers
  • HKBB, Basel Chamber of Commerce
  • VDSI, Association of German safety engineers
  • SGAS, Swiss society for occupational safety
  • energy.cluster.ch, Association for the promotion of energy efficiency and renewable energies
  • ECO SWIIS, ERFA Group environmental protection officer
Learn more here

Our locations