Company History

2026 – Looking to the Future

The change in the ownership and management structure represents an important milestone in the history of the company. With a two-member management board, Kostroj Strojegradnja continues its development journey, focused on further growth, technological development, strengthening competitiveness, and long-term stability.

2026
2025

Expansion of Production Capacity

With the opening of an additional machining department at our Zreče facility, we expanded our production capacity and further strengthened our capabilities in advanced machining.

New Assembly and Storage Hall

Construction of new production facilities.

2022
2019

Program B

Start of serial production.

ISO 45001

The company obtains the ISO 45001 certification.

2011
2007

Complete Production Line

The first production line was assembled. The company invested in a new production hall and a paint shop.

“The Era of Rock Wool Production Lines”

The first spare parts for production lines and equipment servicing/maintenance.

2002
1999

ISO 9001

The company obtains the ISO 9001 certification.

Market Expansion

The company's focus was on entering the Western European market (Germany, Austria, Switzerland, Italy).

1993
1992

Establishment of a New Company

Kostroj Strojegradnja d.o.o. is founded.

Breakup of Yugoslavia

Market collapse. Strategic shift in production plans for machines and machine parts toward Western countries.

1991
1964

New Location

The company relocated to its current site.

Founding of the Company

A leading manufacturer of machines for the leather industry.

1952
Contact

KOSTROJ – STROJEGRADNJA Vzdrževanje, storitve, servis, d.o.o.
Tovarniška cesta 2,
3210 Slovenske Konjice,
Slovenia
T: +386 3 6209 300