
Manufacturing of complete solutions made of glass-fiber-reinforced plastic (GRP) – from nacelle covers for wind turbines to special constructions

Großmann Firmengruppe
Lunden (headquarters, Plant I) · Eggebek (Plant II)New on Amplifa
About the Großmann Firmengruppe
The Großmann Firmengruppe with its headquarters in Lunden (Schleswig-Holstein) has existed since 1977 and is a manufacturer of products made of glass-fiber-reinforced plastic (GRP) based on glass-fiber-reinforced polyester (GF-UP). The group comprises Großmann Kunststofftechnik GmbH, K-tec Kunststoffverarbeitung GmbH and Großmann Wind Energy GmbH. Products manufactured include industrial components, nacelle covers for wind turbines, plastic covers for water, wastewater and environmental systems, agricultural products, mechanical engineering components, small parts in small and large series as well as model, mold and special constructions. Complete solutions can be realized in any size and shape. In addition to manufacturing, the company offers CAD/CAM services, adhesive bonding applications according to DIN 2304, plant engineering and calculations as partner services. Customers include, among others, the wind industry (onshore and offshore), plant engineering, the rail and automotive industries as well as agriculture. In addition to business relationships in other European countries, the company supplies customers in China, India, Venezuela and Brazil. The production facilities in Lunden and Eggebek have been expanded over several stages; since 2011 the company has used a photovoltaic system for self-supply.
- Site
- Lunden
- Processes
- Manufacture of GRP components (glass-fiber-reinforced plastic), Nacelle covers for wind turbines, Adhesive bonding according to DIN 2304 (class S2), Model and mold making, Small part manufacturing in small and large series, Plant engineering, CAD/CAM manufacturing, Special constructions/special builds
- Materials
- Glass-fiber-reinforced polyester (GF-UP), GRP (glass-fiber-reinforced plastic), Glass-fiber-reinforced plastic (GRP)
- Certificates
- DIN EN ISO 9001:2015, DIN 2304 adhesive bonding (class S2), ISO 9001:2015
- Founded
- 1977
- Industries
- Wind industry (onshore and offshore, nacelle covers), Plant engineering, Rail industry/rail vehicles, Automotive industry, Agriculture/mechanical engineering, Water, wastewater and environmental technology
- 01
Model and mold making
- 02
CAD/CAM design
- 03
GRP manufacturing (glass-fiber-reinforced polyester, GF-UP)
- 04
Adhesive bonding according to DIN 2304
- 05
Assembly/plant engineering
- 06
Loading and logistics
Materials and Processes
Glass-fiber-reinforced polyester (GF-UP)
Base material for automotive and industrial components, nacelle covers for wind turbines, covers for water and environmental systems as well as special components.
Glass-fiber-reinforced plastic (GRP)
Universal material for complete solutions in any size and shape, from small parts to large series components.
Sites

Lunden
DEHeadquarters and Plant I: production, model and mold making
- Lot size
- Small to large series
- Materials
- GRP, GF-UP
- Adhesive bonding hall 2015 (DIN 2304, class S2)
- Photovoltaic system for self-supply
Eggebek
DEPlant II (opened 2007)
- Materials
- GRP
Components and Products




Inside the production










Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of GRP components (glass-fiber-reinforced plastic)Plastics | – | – | – | Small series – Large series | GRP (glass-fiber-reinforced polyester, GF-UP) |
| Nacelle covers for wind turbinesPlastics | – | – | – | – | GF-UP |
| Adhesive bonding according to DIN 2304 (class S2)Joining | – | – | – | – | GRP |
| Model and mold makingEngineering | – | – | – | – | GRP |
| Small part manufacturing in small and large seriesPlastics | – | – | – | – | GRP |
| Plant engineeringAssembly | – | – | – | – | GRP |
| CAD/CAM manufacturingEngineering | – | – | – | – | – |
Additional services
Reference customers
Quality
The Großmann Firmengruppe is certified according to DIN EN ISO 9001:2015 (DEKRA, certificate 80312171/2) and held a certificate for adhesive bonding applications according to DIN 2304 class S2 (OFI). The manufacturing covers series components and complex special constructions with continuous quality assurance.
| Evidence | Lunden |
|---|---|
| ISO 9001:2015 | |
| DIN 2304 adhesive bonding (class S2) |
History
- 1977
Foundation of Großmann Kunststofftechnik by Wolfgang Großmann
- 1988
Move to the factory building in Lunden, Brunnenstraße
- 1991
Conversion into Großmann Kunststofftechnik GmbH
- 1995
Foundation of K-Tec Kunststoffverarbeitungs GmbH
- 1999
Expansion of production area by 2,000 m²
- 2003
Expansion of production area by 2,500 m²
- 2007
Opening of Plant II in Eggebek
- 2008
Expansion of production area by approximately 2,000 m²
- 2009
Named TOP Areva supplier on 01.07.2009 in Berlin; 1st place at the REpower Suppliers Day 2009/2010
- 2011
Inauguration of the new production facility Lunden/Moorchausse with an expansion of 3,500 m²; commissioning of a photovoltaic system for own use
- 2012
Foundation of Großmann Wind Energy GmbH; construction of a storage and assembly hall; PV expansion by 100 kWp; start of worldwide offshore projects; preparatory planning for the expansion of Plant III
- 2021
Successful certification according to DIN EN ISO 9001:2015 (valid 12.03.2021–11.03.2024)