Classification Detail

This class includes manufacture of heat-insulating ceramic products made by shaping and subsequently firing siliceous fossil meals: -refractory bricks, blocks, tiles and similar refractory ceramic building materials. -ceramic products that can withstand the high temperatures encountered in metallurgical operations. -refractory cements. -retorts, crucibles, muffles, nozzles, tubes, pipes, etc. Exclusion: Manufacture of ceramic articles other than refractory products is classified in class 2691 (Manufacture of non-structural non-refractory ceramic ware) and class 2693 (Manufacture of structural non-refractory clay and ceramic products).