Tailor-made machinery, steel, vessel and plant engineering with in-house design, manufacturing and assembly
Leonhardt GmbH
66687 Wadern-Nunkirchen (Kleinbahnstr. 20) · SaarlandNew on Amplifa
Tradition and Innovation – Leonhardt GmbH
Leonhardt GmbH is a medium-sized, owner-managed family business for machinery, steel, vessel and plant engineering based in Wadern-Nunkirchen in the Saarland. Since its founding in 1984 as a design office for plant engineering, the company has developed and manufactured custom machines and plants, including special-purpose machinery, conveying technology such as conveyor belts, turntables and automated transport systems, steel load-bearing structures, apparatuses and vessels, as well as equipment for coking plant and metallurgical plant technology. The value chain covers planning and design with 3D-CAD modelling, prototype construction, welded fabrication of assemblies (MAG/TIG) and pre-assembly through to mechanical assembly, electrical installation, commissioning, maintenance and repair. The material focus is steel, including certified steel load-bearing structures in accordance with DIN EN 1090-2 in execution class EXC3. Customers come from the metal and metal-processing industry, coking plant and metallurgical plant technology, the automotive industry and power generation. On more than 2000 m² of production space in Wadern-Nunkirchen, Leonhardt GmbH works for customers such as Daimler AG, Porsche AG, Siemens AG, Paul Wurth S.A. and the Zentralkokerei Saar.
- Site
- Wadern-Nunkirchen
- Processes
- Welding of assemblies (MAG 135 / TIG 141), Welding of steel load-bearing structures (EN 1090-2, EXC3, welding certificate EN 1090-1 Table B.1), Steel construction, Apparatus construction, Piping construction, Vessel construction, Manufacture of assemblies and machines for the metal-processing industry / pre-assembly, Mechanical assembly of industrial plants
- Materials
- Steel (steel load-bearing structures according to DIN EN 1090-2), Metal (general, metal-processing industry), Steel load-bearing structures, MAG welding, TIG welding
- Certificates
- ISO 9001:2015, EN 1090-1 welding certificate (EXC3 according to EN 1090-2), EN 1090-1 / EXC3 according to EN 1090-2
- Founded
- 1984
- Industries
- Metal industry, Coking plant and metallurgical plant technology, Metal-processing industry, Automotive industry, Power generation, metal-processing industry
- 01
Consulting
- 02
Planning & design (3D-CAD)
- 03
Prototype construction
- 04
Welded fabrication / manufacturing
- 05
Pre-assembly
- 06
On-site assembly (mechanical, electrical, pneumatics/hydraulics)
- 07
Commissioning
- 08
Maintenance and repair
Materials and Processes
Steel load-bearing structures
Welded steel load-bearing structures according to DIN EN 1090-2 in execution class EXC3, among other things for steel, vessel and apparatus construction.
MAG welding
Welding process 135 (MAG) for the fabrication of assemblies according to technical drawings.
TIG welding
Welding process 141 (TIG) for demanding welding tasks on assemblies.
Locations
Wadern-Nunkirchen
DECompany headquarters, administration, design and production
- Materials
- Steel
Products and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Welding of assemblies (MAG 135 / TIG 141)Joining | – | – | – | – | Steel |
| Welding of steel load-bearing structures (EN 1090-2, EXC3, welding certificate EN 1090-1 Table B.1)Joining | – | – | – | – | Steel |
| Steel constructionAssembly | – | – | – | – | Steel |
| Apparatus constructionAssembly | – | – | – | – | Steel |
| Piping constructionAssembly | – | – | – | – | – |
| Vessel constructionAssembly | – | – | – | – | – |
| Manufacture of assemblies and machines for the metal-processing industry / pre-assemblyAssembly | – | – | – | – | Metal |
| Mechanical assembly of industrial plantsAssembly | – | – | – | – | – |
| Electrical installationAssembly | – | – | – | – | – |
| Installation of pneumatic and hydraulic systemsAssembly | – | – | – | – | – |
| Maintenance, repair, servicing and fault diagnosisAssembly | – | – | – | – | – |
| Planning and design of machines and plants (3D-CAD modelling)Engineering | – | – | – | – | – |
| Prototype constructionEngineering | – | – | – | – | – |
| Manufacture of conveying technology (conveyor belts, turntables, automated transport systems)Assembly | – | – | – | – | Steel |
| Coking plant and metallurgical plant technology – manufacture of custom machines and plantsAssembly | – | – | – | – | Steel |
Additional services
Reference customers
Quality and Certifications
Leonhardt GmbH has been certified to ISO 9001 since 2004 (currently ISO 9001:2015, DEKRA) for planning, delivery and assembly in the field of steel, vessel, piping and mechanical engineering. Quality assurance is ensured through ongoing training, production inspections, qualification certificates and welding engineers; the welding of steel load-bearing structures is carried out according to DIN EN 1090-2 in execution class EXC3 with a welding certificate in accordance with EN 1090-1.
| Evidence | Wadern-Nunkirchen |
|---|---|
| ISO 9001:2015 | |
| EN 1090-1 / EXC3 according to EN 1090-2 |
History
- 1984
Founded as a design office for plant engineering
- 1991
Own manufacturing in Losheim am See
- 2004
Certification according to ISO 9001
- 2007
New location in Losheim; second, temporary location in Lockweiler; takeover of the designs of HFHN
- 2009
Expansion of the production floor space in Losheim
- 2010
Expansion of production through a new facility in Nunkirchen
- 2011
Further expansion of production in Nunkirchen; takeover of products of Reinguss GmbH
- 2017
Relocation of the company headquarters to Wadern/Nunkirchen
- 2019
Sale of Leonhardt GmbH to employees