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HTS 6903Other 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

Product or HTS code

Rate lines4

Code	Description	General	Special	Column 2	Units	Calculate
6903.10.00.00	6903.10.00.00Containing by weight more than 50 percent of free carbonGeneral Free · Column 2 45% · kg	Free		45%	kg
6903.20.00.00	6903.20.00.00Containing by weight more than 50 percent of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2)General Free · Column 2 30% · kg	Free		30%	kg
6903.90.00	6903.90.00OtherGeneral Free · Column 2 30%	Free		30%
6903.90.00.10	6903.90.00.10Of clayGeneral Free · Column 2 30% · kg	Free		30%	kg
6903.90.00.50	6903.90.00.50OtherGeneral Free · Column 2 30% · kg	Free		30%	kg
	II. OTHER CERAMIC PRODUCTS

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Mexico35.04% of imports	Japan15.36% of imports	Germany12.35% of imports	India7.56% of imports	China5.96% of imports	Canada5.54% of imports	United Kingdom5.06% of imports	Italy4.1% of imports	Poland3.68% of imports	France0.75% of imports
6903.10.00.00Containing by weight more than 50 percent of free carbon	10%9903.05.55	12.5%9903.05.49	10%9903.05.39	10%9903.05.44	37.5%9903.05.319903.88.03	10%9903.05.29	10%9903.05.81	10%9903.05.39	10%9903.05.39	10%9903.05.39
6903.20.00.00Containing by weight more than 50 percent of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2)	10%9903.05.55	12.5%9903.05.49	10%9903.05.39	10%9903.05.44	37.5%9903.05.319903.88.03	10%9903.05.29	10%9903.05.81	10%9903.05.39	10%9903.05.39	10%9903.05.39
6903.90.00.10Of clay	10%9903.05.55	12.5%9903.05.49	10%9903.05.39	10%9903.05.44	37.5%9903.05.319903.88.03	10%9903.05.29	10%9903.05.81	10%9903.05.39	10%9903.05.39	10%9903.05.39
6903.90.00.50Other	10%9903.05.55	12.5%9903.05.49	10%9903.05.39	10%9903.05.44	37.5%9903.05.319903.88.03	10%9903.05.29	10%9903.05.81	10%9903.05.39	10%9903.05.39	10%9903.05.39

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).