
Steel structures, plant components and special steel construction from site survey to industrial installation
K + F Kranbau und Fördertechnik GmbH
IndenNew on Amplifa
About K+F GmbH
K + F Kranbau und Fördertechnik GmbH is an owner-managed contract manufacturer in metal and plant engineering based in Inden near Aachen. Founded in 1991 as a supplier and service company for crane systems and conveying technology, the company today manufactures steel structures of every kind – from simple components to complex plant components. Its range of services covers site survey and engineering, manufacturing and industrial installation, plant construction as well as maintenance and repair, complemented by special solutions in special steel construction. As an approved specialist company under the Federal Water Act (WHG), the company manufactures and installs tanks, containment trays and pipelines for LAU and HBV installations. Its customers include companies from the paper industry, lignite open-cast mining, power plants, the gravel and concrete industry as well as tank and mechanical engineering; reference projects range from the cathode rotating device for aluminium molten-salt electrolysis to the rotating spreader beam for large transformers up to 500 t.
- Site
- Inden
- Processes
- Steel construction, Site survey & engineering, Manufacturing, Industrial installation, Plant construction (conveyor systems, components for foundry plants, special solutions for special, Maintenance & repair (open-cast mining equipment, foundries, crane systems), Welding (welders documented as personnel, welding engineer available), Manufacture of tanks, containment trays and pipelines (specialist company under the Federal Water
- Materials
- Steel (steel structures, steel and plant construction), Aluminium (molten aluminium, cathodes for molten-salt electrolysis – plant components for these), Steel, Aluminium, Specialist company under the Federal Water Act
- Certificates
- Specialist company under the Federal Water Act (WHG), Welding engineer (QSt), Crane expert (employers' liability insurance association)
- Founded
- 1991
- Industries
- Steel construction, Plant engineering, Paper industry, Lignite open-cast mining, Power plants, Gravel and concrete industry
- 01
Site survey
- 02
Engineering
- 03
Manufacturing
- 04
Welding
- 05
Industrial installation
- 06
Maintenance & service
Materials & Processes
Steel
Material for steel structures, plant components, tanks, containment trays and pipelines in steel and plant construction.
Aluminium
Plant components for molten-salt electrolysis, e.g. rotating devices for cathodes up to 2000 kg.
Specialist company under the Federal Water Act
Approval for construction, repair and installation of tanks, containment trays and pipelines at LAU and HBV installations.
Locations

Inden
DEHead office, production hall
- Materials
- Steel
Components & Reference Projects



Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Steel constructionEngineering | – | – | – | – | Steel |
| Site survey & engineeringEngineering | – | – | – | – | Steel |
| ManufacturingJoining | – | – | – | – | Steel |
| Industrial installationInstallation | – | – | – | – | – |
| Plant construction (conveyor systems, components for foundry plants, special solutions for specialEngineering | – | – | – | – | Steel |
| Maintenance & repair (open-cast mining equipment, foundries, crane systems)Installation | – | – | – | – | – |
| Welding (welders documented as personnel, welding engineer available)Joining | – | – | – | – | Steel |
| Manufacture of tanks, containment trays and pipelines (specialist company under the Federal WaterJoining | – | – | – | – | Steel |
| Special solutions / special fixtures (e.g. cathode rotating device)Engineering | – | – | 2000 kg | – | Aluminium (customer cathodes) |
| Disassembly of large transformers using rotating spreader beam up to 500 tInstallation | – | – | 500 t | – | – |
| Crane systems and conveying technology (supplier and service company)Installation | – | – | – | – | Steel |
| Heavy-lift transportInstallation | – | – | – | – | – |
Additional services
Reference customers
Quality
A graduate engineer with qualification as a welding engineer and a crane expert approved by the employers' liability insurance association is responsible for quality assurance and documentation. Manufacturing follows proven practices with verified welder qualifications.
| Evidence | Inden |
|---|---|
| Welding engineer (QSt) | |
| Crane expert (employers' liability insurance association) | |
| Specialist company under the Federal Water Act (WHG) |
History
- 1991
Founded as a supplier and service company for crane systems and conveying technology.
- 1999
Jürgen Sieben joined the company, initially as master foreman responsible for the workshop.
- 2001
Jürgen Sieben moved to the executive management.
- 2005
After the departure of the company founder, Jürgen Sieben took over sole management; expansion of the core business into a versatile supplier to industry.
- 2021
Approval as a specialist company under the Federal Water Act (WHG).
- 2023
Heavy-lift transport to the Inden open-cast mine.