Manufacturing of stainless steel flue gas systems, chimney components and flue gas heat recovery systems in Germany.
Joseph Raab GmbH & Cie. KG (Raab-Gruppe)
Neuwied · Luckenau (Zeitz) · Maisach · ÜberlingenNew on Amplifa
The Raab Group
The Raab Group, with Joseph Raab GmbH & Cie. KG as its parent company, is a provider of chimney systems and flue gas technology for heat generators – from combustion air through the firing appliance and connecting flue to the chimney termination. The product portfolio includes single- and double-wall stainless steel flue gas systems, plastic flue gas systems, chimney components such as fine dust particle separators, draft limiters, flue gas dampers, silencers and flue gas fans, as well as flue gas heat recovery systems with finned, smooth-tube and spiral-tube heat exchangers and condensing (plume) condensers. Production takes place at the Luckenau (Zeitz) site using stainless steels such as 1.4404, 1.4571, 1.4539 and 1.4828 as well as ceramics and temperature-resistant plastics; the manufacturing processes include laser cutting, automated tube production and insulation. The Group, with the brands Raab, Kutzner + Weber, NET and BOMAT, serves residential, commercial and industrial construction, CHP units, bakeries, heat treatment shops, foundries and other operations with thermal processes. Locations are Neuwied, Luckenau, Maisach and Überlingen; installation is carried out via a network of installation partners in Germany and the neighbouring countries.
- Site
- Neuwied
- Processes
- Manufacture of stainless steel flue gas systems (single- and double-wall stainless steel tubes), Manufacture of chimney components (flue gas dampers, draft limiters, silencers, flue gas fans,, Sound measurement (certified), Flue gas measurement / volume flow measurement, Concept development and design of heat exchangers (customised), Installation of flue gas systems and heat recovery systems (via installation partner network), Contract assembly, Manufacture of plastic flue gas systems
- Materials
- Stainless steel (highly alloyed, corrosion-resistant), Stainless steel, Ceramic (ceramic tubes for heat exchangers), Plastic (flue gas systems, temperature-resistant plastics, plastic tubes), Mineral fibre (absorber for silencers), Stainless steel 1.4539, Stainless steel 1.4404, Stainless steel 1.4571
- Certificates
- DIN EN ISO 9001, ISO 9001
- Founded
- 1898
- Industries
- Residential and private construction, Commercial and industrial, CHP units, Bakery trade / large bakeries, Food industry, Heat treatment shops
- 01
Consulting and flue gas measurement (volume flow measurement)
- 02
Concept development and customised heat exchanger design
- 03
Manufacturing in Germany (Luckenau/Neuwied)
- 04
Installation via installation partner network
- 05
After-sales service, maintenance, inspection, repair
Materials and Processes
Stainless steel 1.4539
Highly alloyed, corrosion-resistant stainless steel for WPG flue gas systems when heating with biomass.
Stainless steel 1.4404
Standard material for NET heat exchangers for flue gas heat recovery.
Stainless steel 1.4571
Standard material for NET heat exchangers for flue gas heat recovery.
Stainless steel 1.4828
Material for heat exchangers under particularly high demands.
Ceramic
Ceramic tubes for heat exchangers (Profitherm).
Plastic
Temperature-resistant plastics for plastic flue gas systems of modern heat generators.
Mineral fibre
Absorber material for passive flue gas silencers.
Locations
Neuwied
DEHeadquarters, administration; production line for double-wall stainless steel tubes; Raab test rig for fire protection
- Materials
- Stainless steel
- Production line for double-wall stainless steel tubes
- Raab test rig for fire protection elements
Luckenau (Zeitz)
DEMain production, administration and logistics (J. Raab GmbH, BOMAT Energiesysteme GmbH)
- Materials
- Stainless steel 1.4404, 1.4571, 1.4539, 1.4828
- Fully automated tube production line for single- and double-wall stainless steel tubes
- Robots
- Machines for end machining
- Flatbed laser
- Tube cutting laser
- Insulation booth with twin blowing machine
Maisach
DELocation of Kutzner + Weber GmbH (brands K+W and NET): development and production of chimney components
- Materials
- Stainless steel
Überlingen
DEAdministration and production building (BOMAT Energiesysteme GmbH)
Components and Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of stainless steel flue gas systems (single- and double-wall stainless steel tubes)Joining | – | – | – | – | Stainless steel 1.4404, Stainless steel 1.4571, Stainless steel 1.4539, Stainless steel 1.4828 |
| Manufacture of chimney components (flue gas dampers, draft limiters, silencers, flue gas fans,Joining | – | – | – | – | Stainless steel |
| Sound measurement (certified)Testing | – | – | – | – | – |
| Flue gas measurement / volume flow measurementTesting | – | – | – | – | – |
| Concept development and design of heat exchangers (customised)Engineering | – | – | – | – | Stainless steel |
| Installation of flue gas systems and heat recovery systems (via installation partner network)Assembly | – | – | – | – | – |
| Contract assemblyAssembly | – | – | – | – | – |
| Manufacture of plastic flue gas systemsPlastics | – | – | – | – | Plastic |
| Manufacture of flue gas heat exchangers (finned tube, smooth tube, spiral tube, condensing (plume)Engineering | – | – | – | – | Stainless steel, Ceramic |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Production system for single- and double-wall stainless steel tubes (fully automated tube | – | – | – | – | Luckenau |
| Robots (tube production) | – | – | – | – | Luckenau |
| Machines for end machining | – | – | – | – | Luckenau |
| Flatbed laser | – | – | – | – | Luckenau |
| Tube cutting laser | – | – | – | – | Luckenau |
| Insulation booth with twin blowing machine | – | – | – | – | Luckenau |
| Production line for double-wall stainless steel tubes | – | – | – | 2007 | Neuwied |
| Raab test rig (development of fire protection elements) | – | – | – | – | Neuwied |
Additional services
Reference customers
Quality Assurance
The quality management system of the Raab Group is certified to DIN EN ISO 9001: Joseph Raab / J. Raab since 1997, Kutzner + Weber since 2002 and BOMAT since 2004. For the development of fire protection elements, an in-house Raab test rig is available in Neuwied.
| Evidence | Neuwied | Luckenau (Zeitz) | Maisach | Überlingen |
|---|---|---|---|---|
| ISO 9001 |
History
- 1898
Foundation of the Neuwied floating-brick and cement goods factory Paul Raab by Paul Raab.
- 1934
Patent application for the jointless bimetal-controlled shut-off damper (Diermayer damper) by Alois Diermayer.
- 1951
Renaming to Joseph Raab GmbH & Cie. KG.
- 1985
Production expansion to include stainless steel and lightweight chimneys; development of draft limiters at Kutzner + Weber.
- 1988
Introduction of the first flue gas silencer programme.
- 1991
Start of production of stainless steel systems at the new Luckenau plant.
- 1997
Acquisition of Kutzner + Weber GmbH; ISO 9001 certification of Joseph Raab / J. Raab GmbH.
- 2002
ISO 9001 certification of Kutzner + Weber GmbH.
- 2004
Focus on flue gas systems and flue gas technology; sale of the grinding and dosing products division to the Quickmix Group.
- 2005
Conversion of J. Raab AG into J. Raab GmbH.
- 2007
New production line for double-wall stainless steel tubes in Neuwied; construction of the new administration and production building in Überlingen.
- 2015
Acquisition of NET – Neue Energie-Technik GmbH (flue gas heat recovery); market launch of Airjekt 1 and AirSpeedy.
- 2020
Alexander Root becomes Deputy Managing Director; presentation of the Airjekt 1 series.
- 2023
125th anniversary; investment in fully automated tube production at the Luckenau site.
- 2026
Acquisition of BOMAT Energiesysteme GmbH effective 1 January 2026.