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HS 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.

Sub-codes in this heading. Select one to see its duties, controls and binding rulings.

690310Containing, by weight, more than 50 % of free carbon690320Containing, by weight, more than 50 % of alumina (Al@2O@3) or of a mixture or compound of alumina and of silica (SiO@2)690390Other