Assembly of Steel Structures
About the service
We install prefabricated steel structures and technological equipment.
Design
Delivery
Installation
We build Estonia’s largest industrial buildings
From 100 meters up in the air to a kilometer beneath the surface, we handle installations in even the most demanding conditions. We have constructed mining conveyors extending up to 6 kilometers and erected steel frame structures weighing up to 7,000 tonnes.
- Profiled sheeting installation
- Prefabricated sandwich panel assembly
- Sheet metal trimming and cladding finishes
- Precast concrete element erection
- Installation of technological equipment
Our projects
Rakvere Football Hall
Industrial and production facilities
Rakvere Football Hall
The steel structures for the Rakvere Soccer Arena (also known as the Bauroci Soccer Arena) were designed by Norte and Maru Metall, manufactured by Maru Metall, and installed by Maru THM. The soccer arena , which features a permanent playing field, measures 74.5 by 113 meters.
Steel Structures for the VKG Uus-Kiviõli Mine Conveyor
Industrial and production facilities
Steel Structures for the VKG Uus-Kiviõli Mine Conveyor
As part of the project, steel conveyor structures will be installed from the new Ojamaa mine, which is set to open, to the existing mine, covering a total distance of approximately 6 km, including one river crossing. The total amount of steel to be installed is approximately 1,000 metric tons.
Steel Structures for an Aircraft Engine Test Facility
Other
Steel Structures for an Aircraft Engine Test Facility
NPM Narva Magnet Factory
Industrial and production facilities
NPM Narva Magnet Factory
Nearly the entire Maru Group was involved in the construction of the production facility for rare earth magnets of Canadian manufacturer Neo Performance Materials (NPM), which opened in Narva in 2025. The news of the 75-million euro investment making its grand opening garnered worldwide attention and made headlines in publications such as the Financial Times and the New York Times.
NPM proudly emphasised that the plant was completed “on time, on budget and on spec”. Owing to a trust-based partnership with the client, the design and construction work was based on a tight but realistic schedule drawn up by Maru. The plant was completed in just 500 days, a fact that was commented in the media by NPM executives that in the United States, for example, this process would have taken four or five times as long.
Elcogen’s Office and Production Facility
Industrial and production facilities
Elcogen’s Office and Production Facility
Paide Football Hall
Sports and leisure facilities
Paide Football Hall
The football hall features a full-size artificial turf pitch alongside two tartan running lanes. The new facility serves as a training ground for youth players, schools, and kindergartens, as well as the home venue for Paide town’s flagship team.
The building features a 77-meter clear span and an axis-to-axis length of 113 meters, maintaining a comfortable indoor temperature of 15°C. Designed for versatility, the hall can host various competitions and events – even dance festival rehearsals – and is equipped with high-quality broadcast lighting for TV transmissions.
Hanhikivi-1 Nuclear Power Plant Reinforcement Shop
Energy infrastructure
Hanhikivi-1 Nuclear Power Plant Reinforcement Shop
Naantali Boiler House
Energy infrastructure
Naantali Boiler House
In-building expansion work at the Telia Data Center
Office buildings
In-building expansion work at the Telia Data Center
Installation of Steel Structures at Outokumpu Kemi Mine
Industrial and production facilities
Installation of Steel Structures at Outokumpu Kemi Mine
Roof Gallery Structures of the REDI Lumo One Office Building
Office buildings
Roof Gallery Structures of the REDI Lumo One Office Building
| Supply and installation of steel structures for the REDI Lumo One office building (80 metric tons). Installation and monolithic casting of concrete elements for the roof gallery. Work performed at a height of 100 meters above ground level. |
PK Terminal Bulk Materials Warehouse at Muuga Harbor
Warehouses
PK Terminal Bulk Materials Warehouse at Muuga Harbor
At your service
Maru THM OÜ
Our experienced installation team brings extensive experience in executing large-scale projects.
