With a presence in over 30 countries and sales in more than 100 countries, we operate in proximity to our customers, to meet the specific needs and challenges of our local markets.
Calderys at a glance
Leveraging over a century of experience, a global presence, and a truly diverse team, we work closely with customers and suppliers to turn our unique process insights into industrial solutions. We’re continuously looking to improve and innovate. Combining Calderys and HarbisonWalker International (HWI) creates additional scale and increased value for customers.

AN EXCITING NEW JOURNEY
Industries around the globe are rapidly implementing changes to overcome the complex challenges defining our era.
As a privately owned company, proud of its long history and global footprint, we face this new era with optimism and aspirations.
As such, it is my conviction that the transformation of the high temperature landscape calls for a new definition of expertise — one underpinned by precision, agility and, above all, new standards of customer-centricity.
Our promise is founded on our global infrastructure of local plants and suppliers, our truly diverse team of experts and 100 years of process insights and technical know-how.
With the combination of Calderys and HarbisonWalker International, we have a tremendous opportunity to bring together the best of both businesses and set a new benchmark for the industry. Our goal is to be the best in class. To be the best partner for our customers.
Thanks to our people, there are no limits to what we can achieve.
Michel Cornelissen
President and Chief Executive Officer
Everywhere you need us to be
With more than 5,000 people worldwide and an additional 1,500 from HarbisonWalker International, representing over 50 nationalities, Calderys has broken down barriers to create a truly global refractory network spanning production plants, local labs, sales offices, engineering centers, external partners, and full-time workers on customer sites. With a presence in over 30 countries and sales in more than 100 countries, we operate in proximity to our customers, to meet the specific needs and challenges of our local markets.
Key figures
Together, Calderys and HWI have 150+ years of combined experience, count 4,500 employees (excluding contractors) in over 30 countries, and 50 plants in the 5 continents.
DISCOVER OUR SITES

Calderys Leadership Team is composed of executives, valued for their strong knowledge of the business and years of experience in the industry. Truly diverse and international, with 6 different nationalities, the team defines Calderys’ strategic orientations and ensures the achievement of its ambitious growth plan. The Executive Committee leads the Group formed by the combination of Calderys and HarbisonWalker International.











