KZU AD is a privately-held joint stock company state-founded in 1966 and privatized in 2001 by the current CEO Mr. Antony Antonov. We are the only and exlusive heir of the state-owned, historical KZU.

In the family of companies of KZU are KZU ZLMK Ltd, located in the city of Septemvri, KZU Burgas, located in the city of Burgas, right next to Lukoil Neftochim refinery, KZU Trading, and KZU Oil Engineering. These entities and their assets are 100% owned by the mother company KZU AD. All other companies, entities, organizations and persons are by no means associated with our company.

The company has 5 production plants, situated in Sofia, Septemvri, Burgas, Devnya, and Stara Zagora and employs more than 400 welders, fitters, workers, engineers and administrative personnel. KZU possesses various types of high scale bending, cutting, welding, drilling, forming, rolling, blasting, painting and other machines, as well as cranes and trucks used for assembly.

We have executed numerous turn-key projects for Bulgarian and foreign clients in the following areas:

• Study, design, engineering, fabrication, delivery and assembly of all kinds of welded steel structures, such as columns, towers, chimneys, bars, platforms, and etc.;

• Study, design, engineering, fabrication, delivery and assembly of all types of steel reservoirs, vertical and underground, for storage of petroleum products, water, acids, etc with volumes up to 120 000 m3, as well as destructive and non-destructive testing of the welded joints;

• Refurbishment, modernization, and repair of existing petroleum storage depots;

• Fabrication of technological and pressure hydro-, steam-, petroleum- pipelines and the related infrastructure – tanks, pump stations, etc.;

• Fabrication of parts for power-, hydro-, wind-, and nuclear plants;

• Anti-corrosion treatment of all kinds of metal structures and reservoirs, as well as insulation;

• Education of welding technicians, executed in the KZU Welding Education Center. Training of welders

KZU is a member of the Bulgarian Chamber of Commerce and Industry and the Bulgarian Building Chamber.