Harmonized System
Section XIII > Chapter 69 > Heading 6903
Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths.
Section XIII > Chapter 69 > Heading 6903 > 6903.10
Containing by weight more than 50 % of free carbon
Section XIII > Chapter 69 > Heading 6903 > 6903.20
Containing by weight more than 50 % of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2)
Section XIII > Chapter 69 > Heading 6904
Ceramic building bricks, flooring blocks, support or filler tiles and the like.
Section XIII > Chapter 69 > Heading 6904 > 6904.10
Building bricks
Section XIII > Chapter 69 > Heading 6905
Roofing tiles, chimney-pots, cowls, chimney liners, architectural ornaments and other ceramic constructional goods.
Section XIII > Chapter 69 > Heading 6905 > 6905.10
Roofing tiles