Ground screws and screw pile systems as an alternative to concrete foundations
Krinner Schraubfundamente
Straßkirchen (DE)New on Amplifa
About Krinner Schraubfundamente
Krinner Schraubfundamente develops, manufactures and installs ground screws as an ecological alternative to concrete foundations. Founded in 1994 and headquartered in Straßkirchen in Lower Bavaria, the company offers ground screws in several product series (E-, F-, G-, M-, U-, V-, T- and Vi series) for applications ranging from utility-scale photovoltaic plants and noise barriers along railway lines to solar carports, fencing and house foundations. The foundations are made of steel (S355, galvanized or TZN finish) and are manufactured to EN 1090-2 EXC2. The Vi series is a soil-displacing screw pile system for high vertical compressive loads with lengths of up to 3000 mm. The company goes back to inventor Klaus Krinner, who invented the single-cord Christmas tree stand in 1989, filed over 100 patents and built the company into a pioneer of ground screw technology. Customers include Deutsche Bahn (noise barriers). Delivery and installation services extend across Europe, North America and internationally.
- Site
- Straßkirchen
- Processes
- Ground screws (manufacture and installation of ground screws), Vi screw pile system (screwing, soil-displacing installation for high vertical compressive loads), Manufactured to EN 1090-2 EXC2 (structural steelwork), Foundation solutions without concrete (ground screws), Solutions for utility-scale photovoltaic plants, Noise barrier solutions, Solar carport systems, Home & hobby products (Christmas tree stands)
- Materials
- S355, Galvanized steel (TZN), Structural steelwork to EN 1090-2 EXC2
- Certificates
- DIN EN ISO 9001:2015, ISO 9001, EN 1090
- Founded
- 1994
- Industries
- Photovoltaics / Solar, Transportation infrastructure, Building construction / Structural engineering, Carport and wooden deck construction, Fencing and mast construction, Transportation infrastructure (Deutsche Bahn, railway bridges)
- 01
Design and product development
- 02
Steel fabrication to EN 1090-2 EXC2
- 03
Galvanizing (TZN)
- 04
Sales and project coordination
- 05
Installation and assembly of ground screws
Materials and Processes
S355
Structural steel for the Vi screw pile system with direct load transfer and high robustness.
Galvanized steel (TZN)
Hot-dip galvanized steel for durable corrosion protection when ground screws are installed in soil.
Structural steelwork to EN 1090-2 EXC2
Manufacture of the screw pile systems in accordance with structural steel standard EXC2.
Sites
Straßkirchen
DEHeadquarters / Production
- Materials
- Steel S355, galvanized steel
Products and Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Ground screws (manufacture and installation of ground screws)Assembly | – | 3000 mm (longest variant Vi 140 x 6.3 | – | – | Steel S355 |
| Vi screw pile system (screwing, soil-displacing installation for high vertical compressive loads)Assembly | – | 3000 mm | – | – | S355 |
| Manufactured to EN 1090-2 EXC2 (structural steelwork)Joining | – | – | – | – | S355 |
Additional services
Reference customers
Quality
The screw pile systems are manufactured to EN 1090-2 EXC2. In 2025, the company was recertified to DIN EN ISO 9001:2015.
| Evidence | Straßkirchen |
|---|---|
| ISO 9001 | |
| EN 1090 |
History
- 1989
In March 1989, Klaus Krinner invents the single-cord Christmas tree stand
- 1994
Foundation of the company
- 2009
Initiator of the Gänsdorf solar field, Germany's most powerful PV plant in 2009
- 2014
Klaus Krinner receives the Golden Citizen's Medal of the municipality of Straßkirchen
- 2019
Klaus Krinner is made an honorary citizen of Straßkirchen
- 2025
Klaus Krinner passes away on 31 August 2025; introduction of the Vi series (screw pile system)
- 2025
Recertification to DIN EN ISO 9001:2015