A reliable partner in the metal processing industry

Our specialization are tanks for high voltage transformers.

We guarantee quality production of all types of metal constructions within the agreed deadlines.

28 years

of successful business in the European market of metal processing industry

300 workers

with which we cooperate in the growth and quality of production

10000 square meters covered work surface

divided into five connected production halls



Transformer tanks



Metal constructions



Machine parts



Work space

The working space contains 1000 square meters of office and 10000 square meters of production space divided into 5 production units: Warehouse, Machining, Assembly of components, Assembly of products, Corrosion protection and Shipping.

Production capabilities

We are capable of processing construction steel up to 150 mm thick and stainless steel, aluminum and their alloys up to 100 mm thick.


TIG and MAG manual and mechanized welding process are implemented.

Hoists and cranes

We can manipulate an object with a maximum weight of 60 T and a maximum height of 9 m for overall assembly.

Corrosion protection

We do corrosion protection at the request of the customer and we are able to perform corrosion protection coatings for the most demanding 'off-shore' conditions according to the requirements of category CX standard ISO 12944.

Non-destructive testing

Our employees are certified for VT, MT, PT, UT and RT testing which we apply to our products together with tightness (leakage) test.


EN ISO 3834-2

ISO 9001:2015


Primabiro d.o.o. Čakovec company profile

Primabiro d.o.o. from Čakovec was founded in 1992. with its headquarters in Mihovljan, Prvomajska 30.

The founders were brothers Stjepan and Željko Mezga.

Idea behind PRIMABIRO was to establish a business office, designed to be an intermediary between the international market and domestic production in the field of metal processing industry, which was well known to the founders.

The fall of the Berlin Wall in 1989 led to a major business disruption in the European and Russian markets, and then, due to the collapse of the former state and the state of war in Croatia, to a significant decline in business activity in the domestic market.

Primabiro company recognized this opportunity and set out to conquer the international market. It sought and realized its initial business ventures in the markets of Austria, Germany, Italy and Slovenia.


Health and safety at work policy

Our vision of health conditions and safety management includes the implementation of preventive activities in order to identify hazards and reduce health risks in the workplace

Quality policy

We have introduced a quality management system in order to achieve the highest possible level of quality of our products and services in the field: Production and installation of steel structures, transformer boilers, parts.

Environmental policy

The general objective of Primabiro company regarding environmental policy is to reduce environmental pollution to a minimum by shaping the production process and raising the awareness of all employees

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