HTS 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

As of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗

Chapter 99 measures listing products under 6903

9903.88.03 Section 301+25%
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided…
China3 listed products
9903.90.08 Country provisionsSee heading
Articles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter
Russia2 listed products

HTS	Description	General	Column 2
6903.10.00.00	Containing by weight more than 50 percent of free carbon	Free	45%
6903.20.00.00	Containing by weight more than 50 percent of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2)	Free	30%
6903.90.00	Other	Free	30%
6903.90.00.10	Of clay
6903.90.00.50	Other