The begining of steel production in northern Slovenia dates back to the 17th Century. Over the years, the high grade specialty steel production has been upgraded with finalization of steels into end-products such as rolls, knives and equipment for metallurgical and other industries which are exported all over the world. Kolding d.o.o. founded in 1993 countinues this tradition.

Since its foundation the company Kolding has developed into a renowned producer of high quality rolls, wear&spare parts and other metallurgical equipment. Besides Metallurgy we are active also in other industries such as Energy, Mining and Engineering. The production is carried out in completely new production facilities under high degree of precision, following the highest production and environmental standards. With constant improvement, our products and staff are becoming better and our production range is expanding.

Stavba Kolding zima 2023-popravek

If you’re looking for demanding components or products with strictest tolerances based on forgings, you have landed on the right webpage. Our products will certainly meet your requirements to provide good solutions for your metallurgical equipment and also for many other industries.

Milan Košeljnik, the visionary founder of Kolding d.o.o., established the company in 1993 with a deep passion for precision machined forgings and a relentless commitment to excellence in supplying parts and equipment for rolling mills. With years of industry experience, Milan Košeljnik has been the driving force behind the company’s success, setting the highest standards of quality and craftsmanship.

Our Commitment

With a dedication to craftsmanship, we provide a one-stop shop for precision machining solutions of heat-treated forgings. Our flexibility, agility, state-of-the-art technology, rigorous quality control, and diverse capabilities enable us to excel in small-batch production.

Milan Košeljnik, CEO and Owner

Quality Assurance

Our in-house quality control is equipped with advanced non-destructive testing capabilities, including Penetrant testing (EN 10228-2), Magnetic Particle Inspection (EN 10228-1), Ultrasonic Testing (EN 10228-3), as well as Hardness testing, roughness measurement, and 3D laser tracker technology. This ensures rigorous inspection and adherence to the highest quality standards in every phase of production.


Our commitment to sustainability goes beyond our internal operations; it extends to our products and services, where we prioritize eco-friendly materials and manufacturing processes.

Our strategic decision to purchase only forgings from recycled steel melted in Electric Arc Furnaces (EAF) reflects our commitment to the circular economy. This approach reduces the environmental impact associated with mining and virgin steel production, lessening our carbon emissions and resource consumption.

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Investments in HR, R&D, and New Technologies

At KOLDING d.o.o., we recognize that our most valuable asset is our team. We heavily invest in our workforce, providing continuous training and development opportunities to enhance their skills and expertise.

Research and Development (R&D) is at the core of our operations with an ambition to design and fabricate more complex equipment for rolling mills like Mandrels, Coil Cars, and Shears. We allocate significant resources to drive innovation, explore new techniques, and stay at the forefront of the industry.

We embrace new technologies to optimize our processes and deliver customer-driven solutions. By investing in modern machinery, digitalization, the latest software, and automation, we ensure the highest level of precision and efficiency in our operations.


Team Kolding

Milan Koseljnik
Milan Košeljnik
Stanislav Majeric
Stanislav Majerič

Commercial Department

T: +386 2 82 34 356


Monika Vogel
Monika Vogel

Financial Department

T: +386 2 82 34 349


Marko Krivec
Marko Krivec

Commercial Department

T: +386 2 82 34 347


Martin Ladra
Martin Ladra
Simon Britovsek vodja proizvodnje
Simon Britovšek
Martin Nerad
Martin Nerad

Head of Technological Process

T: +386 2 82 34 348


Franja Hocevar Nabava
Franja Hočevar

Commercial Department

T: +386 2 82 34 345


branko kramer
Branko Kramer