Steel Constructions and Transformer Tanks
From planning to series production: we manufacture oil-tight tanks and complex assemblies for energy, rail and offshore applications. Certified precision for components regardless of size and complexity.
Production Network
Sevnica & Usora:
Capacity meets high-tech
With our specialized facilities in Slovenia (PREIS Sevnica) and Bosnia and Herzegovina (PREIS Usora), we offer a unique combination of technological expertise and outstanding scalability.
Whether millimetre-precision prototype production or demanding serial production orders across thousands of square metres of production space: we are experts in every stage of the process from CNC cutting and robotic welding all the way to high-end surface coating.
Manufacturing Expertise
Your advantages in heavy steel construction
Certified safety
Highest weld quality in accordance with ISO 3834-2 and certification for demanding rail vehicles (DIN EN 15085-2 CL1).
Extreme capacities
Heavy-duty material handling using state-of-the-art overhead cranes and flexible heavy-duty trolleys for maximum efficiency.
From a single source
From the preparation of manufacturing documents through production and machining to corrosion protection.
Industry Focus
Solutions for extreme requirements.
Transformer manufacturing
Market leader in the production of high-quality and complex smooth-wall and corrugated transformer tanks as well as radiators for distribution and power transformers.
Rail vehicles
Development and manufacture of robust transformer tanks for regional and high-speed trains.
Wind energy
We manufacture transformer tanks for Europe’s largest wind farms, tailored to the requirements of modern onshore and offshore applications.
Industry 4.0 & Automation
State-of-the-art machinery for maximum efficiency
We are investing heavily in the future. With the continuous expansion of our production sites, we are setting industry standards in automation: from vision-guided robots to fully automated high-bay warehouses and automated guided vehicles (AGVs), to state-of-the-art blasting and painting booths for large components.
ESG & Efficiency
Sustainability for heavy industry.
- Renewable energy in productionWith our new 750 kWp photovoltaic system at the Sevnica site, we are focusing on self-generated electricity and actively reducing our CO₂ footprint by approximately 180 tonnes per year.
- Resource-efficient manufacturingExtensive investments in highly efficient compressors, intelligent gas storage systems and modern heat pump technology significantly reduce primary energy demand in our welding facilities.
- Extending the service life of offshore projectsThrough our offshore-certified corrosion protection systems (in accordance with DIN EN ISO 12944, category C5), we protect offshore wind turbines from aggressive environmental influences and significantly extend their operating life.
Downloads & Service
Explore our specifications in detail.
Download our product catalogues as well as certificates relevant to your project planning.
