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Section XIII — Articles of stone, plaster, cement, asbestos, mica or similar materials; ceramic products; glass and glassware

Chapter 69 — Ceramic products

Heading 6903 — Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths and rods), other than those of siliceous fossil meals or of similar siliceous earths.

Subheading

6903.20 Containing by weight more than 50% of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2)

Common commodities
High-alumina firebricksAlumino-silicate cruciblesMullite heat resistant tilesCorundum refractory rodsAluminous ceramic insulatorsRefractory alumina bricksSintered mullite shapesHigh-alumina monolithic productsAlumina refractory tubesAluminous fireclay items

HS codes