Welcome to Harz Guss Zorge GmbH!

Harz Guss Zorge produces complex components, finish-machined and assembled precisely to our customers' specifications if required, for engines, utility vehicles, agricultural machinery, cooling, compressor, drive and propulsion systems.
Our special strength: top technology for demanding users of castings, available in a large range of materials. These capabilities have made us an important development partner for renowned industrial companies around the entire globe.

Plan your journey

Your contacts in Sales

Carsten Hinz

Sales Director Casting Parts

Competence in Iron Castings

Our products

Our production is totally orientated around complex core-intensive components for the automotive industry and mechanical engineering in general. It covers, among other items, cylinder heads, exhaust systems, turbocharger casings, water pumps, along with axle and gearbox parts, all of which are supplied either in as-cast condition, ready machined, or fully assembled and ready for installation.

Our materials

Our range of materials extends from all grey and ductile cast iron grades in accordance with DIN EN 1561 and DIN EN 1563 up to special alloys in conformity to our customers' specifications. The production spectrum is rounded off by even more high-quality materials, such as EN-GJV, EN-GJS-XSiMo and Ni-Resist alloys.

Process development

We attach special importance to advisory services tailor-made for the individual customer – ranging from component design, via materials selection and machining, up to and including the installation of ready-to-run components. Simulation tools and 3D printing technologies assist at all stages of the process, in order that the shortest possible lead times can be achieved for design, tooling up and prototyping, right up to readiness for series production of the components. These benefits have made us a valued development partner for our customers in the automotive and mechanical engineering industries.

Our location movie

Our processes and production facilities

Our targets: meeting maximum demands + highest quality

Process development / Castings engineering

  • Preparation of CAD designs in various formats
  • Generation of CAM data
  • Simultaneous Engineering 
  • Rapid Prototyping / 3D printing of cores for production of prototypes
  • Model Engineering and modelling

Cold-box production of cores

  • Fully automated robot-assisted core handling 
  • Assembly of high-complexity core packages

Melting facilities

  • Primary melting facility: one hot-blast cupola furnace, throughput 25 t/h
  • Secondary melt treatment in four induction crucible furnaces, capacity 8t to 17t
  • Preparation of ductile and compacted graphite iron alloys in two magnesium wire-treatment stations


  • Fully automated moulding line 
  • Type HWS, 850 x 700 x 250/350
  • 200 moulds/h
  • Flexible cooling and shake-out line / Cooling time: 3.5 h to 5h


  • Two fully automated casting machines, teeming ladle capacity 1t 
  • Type HWS / MECANA


  • Metal stream inoculation

Casting preparation

  • Blasting in hook shot blast and continuous-feed blasting machines
  • Blasting robots 
  • Manual blasting chambers
  • Separator and sorting belts

Casting after-treatment

  • Automatic grinding and fettling using CNC grinding robots

Paint finishing

  • Fully automated painting and primering system, using both dip and spray methods


  • By qualified partner companies 
  • Turning, milling, assembly/installation and final tightness testing

Site management

Torsten Stein

Plant Director

Jörg Brille

Head of Finance & Controlling

Carsten Hinz

Sales Director Casting Parts

Michael Dalbert

Quality Manager

Michael Schröter

Head of Foundry

Jens Besser

Purchasing Manager


File name File size
Harz Guss Zorge Lloyds Register 555,63 KB Download
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Harz Guss Zorge Quality Management IATF 16949:2016 411,65 KB Download
Harz Guss Zorge Quality Management ISO 9001: 2015 180,58 KB Download
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Harz Guss Zorge General Terms and Conditions of Purchase 95,52 KB Download

Careers at GMH Gruppe

We are continuously searching for new talent and seasoned professionals to join our production, engineering, innovation and business management teams.

Our values

For us at GMH Gruppe, responsibilty, team spirit, transparency and trust are not just empty words, they are values that are lived out by our teams every day.

Learn more

Your career opportunities

Whether you're just starting out on your career or are already a seasoned professional – GMH Gruppe has a whole range of career opportunities for you. Check out our job portal for vacant posts and employment-related information.

To GMH Gruppe job portal


Is it your personal vision to tackle a whole range of different tasks and enjoy a great team spirit? Then take an apprenticeship or traineeship at GMH Gruppe and lay the foundations for a successful career with excellent future prospects.

Available apprenticeships/traineeships

Your contacts in Human Resources

Steffi Eva Schröter

HR Harz Guss Zorge GmbH

Your contact for Site Communication

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Ina Klix