Hot air duct systems primarily consist of Silrath and Suprath grades. For this purpose, we offer tongue and groove systems for better durability and optimal fit.

Our thermal insulating refractory bricks for hot air duct systems provide a long service life with low temperature losses.

In order to create complex geometries, such as outlets from the blast furnace, the Carath vibrating concretes and gunned concretes round out the comprehensive portfolio in this area.