Welcome to Schmiedag GmbH

Schmiedag GmbH produces closed-die forgings from individually tailored steels, in both non-alloy and high-alloy grades. The company manufactures components for high-capacity engines, custom vehicles, specialised applications and the mining industry, as well as supplying solutions extending from rough forgings through to ready-to-install components.

Plan your journey

Your contacts in Sales

Johannes Braun

Sales Director Closed Die Forgings

Custom solutions for every application

Production expertise

Our on-site toolmaking department, production processes with built-in ultra-efficiency thanks to forming-process simulation, our high levels of automation, unparalleled materials know-how and ultra-stringent quality assurance system form the basis that enables us to meet individual customer requirements exactly, and on time, every time. Our precision  closed-die forgings are the driving force behind whole industries.

Know-how and quality

Our products are produced and supplied in constant conformity to the very highest quality standards. This quality is assured by our certified quality management system, approvals issued by inspection organisations of global repute and wide-ranging measuring and inspection systems, including tests and analyses performed in our on-site materials laboratory.

Responsibility lived out every day

Responsibility for our employees, the environment and the climate is a central element of our corporate philosophy. This responsibility is integrated into all our daily activities and implemented by means of a comprehensive management system and systematic occupational and environmental safety provisions.

Our production facilities

On-site toolmaking

The expert toolmakers in our fully equipped on-site toolmaking shop are the guarantee of high-quality forged products. This is where customers' requirements and needs are made reality in the form of tailor-crafted dies and matrices that precisely reproduce the customer's specifications. Forming-process simulation ensures maximum dimensional accuracy and absolutely flawless results. Depth of production extends from roughing machining of the die block to machining on NC and CNC lathes and milling machines and/or 5-axis milling centres. On-site tool assembly and die welding facilities, backed up by close consultation with the forging experts, ensure exact meeting of customer specifications.

Closed-die forgings

Optimised materials, production and organisational efficiency, combined with the special strength properties achieved in our products thanks to detailed attention to correct grain orientation, are what make our closed-die forgings special. We ensure this by means of preliminary shaping equipment installed upstream the forming machines in all production systems. Schmiedag GmbH's range of machines and other equipment includes automated feed systems, pre-forming and handling systems, industrial robots and highly efficient heat-treatment facilities.

Our presses and forging hammers:

  • 160 kNm and 320 kNm counterblow hammers
  • 45 MN spindle press
  • 31.5 MN eccentric press

Machining and surface finishing

Our products cover the entire value chain, from the blank forging up to and including the ready-to-use component. Produced in optimally harmonised processes, delivered reliably and on time, either roughing, finished and/or ready-to-use machined. Our machining and heat-treating facilities include:

  • Machining centres
  • CNC lathes 
  • Induction hardening systems
  • Surface finishing (painting/coating) 
  • Assembly 

Site management

Heinz Klenen

Plant Director Schmiedag GmbH | Managing Director

Ulrich Osterhoff

Commercial Director Schmiedag GmbH


File name File size
Schmiedag GmbH ABS - Forging, Facility and Process Approval for Steel Forging components for marine applications 287,30 KB Download
Schmiedag GmbH Bureau Veritas - Recognition for BV Mode II Scheme for Forgings 567,77 KB Download
Schmiedag GmbH DNV GL - Approval of Manufacturer for Steel Forgings 251,41 KB Download
Schmiedag GmbH Korean Register of Shipping - Approval Certificate for Manufacturing Process for Steel Forgings 121,20 KB Download
Schmiedag GmbH LR - Approval for Forgings in carbon, carbon-manganese, alloy and austenitic stainless steel 77,83 KB Download
Schmiedag GmbH LR – Approval Steel Forgings 388,89 KB Download
Schmiedag GmbH NKK - Approval of Manufacturing Process for Carbon Steel and Low-Alloy Steel 236,46 KB Download
Schmiedag GmbH Pressure Equipment Directive 2014/68/EU 353,29 KB Download
Schmiedag GmbH Russian Maritim Register of Shipping - Recognition Certificate for Manufacturer 504,77 KB Download
Schmiedag GmbH TÜV Nord – Material manufacturer acc.to AD 2000-Merkblatt W0 349,53 KB Download
File name File size
Schmiedag GmbH DB AG - Manufacturer-Related Product Qualification for railway rolling stock components 891,76 KB Download
Schmiedag GmbH TÜV NORD - DIN EN ISO 14001:2015 118,99 KB Download
Schmiedag GmbH TÜV NORD - DIN EN ISO 50001:2018 146,83 KB Download
Schmiedag GmbH TÜV NORD - DIN EN ISO 9001:2015 115,08 KB Download
File name File size
Schmiedag GmbH location brochure 1,26 MB Download
File name File size
Schmiedag GmbH General Supply and Payment Conditions 90,22 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 the 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

Martin Karmann

HR Schmiedag GmbH

Your contact for Site Communication

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Martina Wülfrath

PA to the managing director, fairs and communications at Schmiedag GmbH