
Manufacturer of components, nacelle covers and special constructions made of glass-fibre reinforced plastic (GRP)

Großmann Firmengruppe
Lunden · EggebekNew on Amplifa
About the Großmann Firmengruppe
The Großmann Firmengruppe, headquartered in Lunden (Schleswig-Holstein), has existed since 1977 and is a manufacturer of products made of glass-fibre reinforced plastics (GRP or GF-UP). The group comprises Großmann Kunststofftechnik GmbH, K-Tec Kunststoffverarbeitungs GmbH and Großmann Wind Energy GmbH. It manufactures series components and complex special constructions, including nacelle covers for wind turbines, automotive and industrial components, components for the rail industry, plastic covers for water, wastewater and environmental plants, as well as agricultural products and mechanical engineering parts in small and large series. The range of services includes model and mould making, CAD/CAM design, plant engineering, assembly and bonding according to DIN 2304 (class S2). The company supplies customers in other European countries as well as in China, India, Venezuela and Brazil, and has been recognized, among other things, as a TOP Areva supplier (2009) and with 1st place at the REpower Suppliers Day 2009/2010. Since March 2021, the Firmengruppe has been certified according to DIN EN ISO 9001:2015.
- Site
- Lunden
- Processes
- Manufacture of products made of glass-fibre reinforced plastics (GRP), Series components and complex special constructions made of GRP, Nacelle covers for wind turbines, Small-part manufacturing, Model and mould making, Plant engineering (plastic covers for water, wastewater and environmental plants), Bonding of components according to DIN 2304 (class S2, bonding area hall 2015), Assembly (process planning, manufacturing, purchasing, trade and assembly of bonded components)
- Materials
- GFK (glass-fibre reinforced plastic), GF-UP (glass-fibre reinforced polyester), Glass-fibre reinforced plastic, Glass-fibre reinforced polyester
- Certificates
- DIN EN ISO 9001:2015, DIN 2304 Bonding Class S2, ISO 9001:2015, DIN 2304 (bonding, class S2)
- Founded
- 1977
- Industries
- Wind industry (on-/offshore), Plant engineering, Rail vehicles/Rail industry, Automotive, Agriculture, Mechanical engineering
- 01
CAD/CAM design and calculation
- 02
Model and mould making
- 03
Manufacture of GRP components
- 04
Bonding and assembly
- 05
Sales and logistics
Materials and Processes
Glass-fibre reinforced plastic
Base material for series components, special constructions and mechanical engineering parts in small and large series.
Glass-fibre reinforced polyester
Used for nacelle covers of wind turbines, industrial components and plastic covers for water and environmental plants.
Sites

Lunden
DEHeadquarters and plant (Großmann Kunststofftechnik GmbH)
- Lot size
- Small and large series
- Materials
- GRP, GF-UP
- Bonding area (hall 2015)
- Storage and assembly hall (2012)
- Photovoltaic system
Eggebek
DEPlant II
Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of products made of glass-fibre reinforced plastics (GRP)Plastics | – | – | – | Small and large series | GFK (glass-fibre reinforced plastic), GF-UP (glass-fibre reinforced polyester) |
| Series components and complex special constructions made of GRPPlastics | – | – | – | – | GRP |
| Nacelle covers for wind turbinesPlastics | – | – | – | – | GF-UP (glass-fibre reinforced polyester) |
| Small-part manufacturingPlastics | – | – | – | Small and large series | GRP |
| Model and mould makingEngineering | – | – | – | – | – |
| Plant engineering (plastic covers for water, wastewater and environmental plants)Plastics | – | – | – | – | GF-UP |
| Bonding of components according to DIN 2304 (class S2, bonding area hall 2015)Joining | – | – | – | – | – |
| Assembly (process planning, manufacturing, purchasing, trade and assembly of bonded components)Assembly | – | – | – | – | – |
| Custom manufacturing / special componentsPlastics | – | – | – | – | GF-UP |
| CAD/CAM designEngineering | – | – | – | – | – |
| Manufacture of agricultural products and mechanical engineering components made of GRPPlastics | – | – | – | – | GRP |
Additional services
Reference customers
Quality
The Firmengruppe has been certified according to DIN EN ISO 9001:2015 since March 2021 (DEKRA). In addition, there is a certificate according to DIN 2304 class S2 for process planning, manufacturing, purchasing and assembly of bonded components.
| Evidence | Lunden |
|---|---|
| ISO 9001:2015 | |
| DIN 2304 (bonding, class S2) |
History
- 1977
Founding of Großmann Kunststofftechnik by Wolfgang Großmann
- 1988
Relocation to the factory building in Lunden, Brunnenstraße
- 1991
Conversion into Großmann Kunststofftechnik GmbH
- 1995
Founding 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
TOP Areva supplier (Berlin); 1st place at the REpower Suppliers Day 2009/2010
- 2011
Inauguration of the Lunden/Moorchausse production site with an expansion of 3,500 m²; commissioning of a photovoltaic system
- 2012
Construction of a storage and assembly hall, founding of Großmann Wind Energy GmbH, PV expansion by 100 kWp; start of worldwide offshore projects
- 2021
Certification according to DIN EN ISO 9001:2015 (March 2021)