HS 6903-20 – Containing by weight more than 50% of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2)
Tariff data as of T2026-2, effective Sept 1, 2026, last verified Oct 21, 2026
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. – Containing by weight more than 50% of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2).