6903.90.00.50
Other
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: Other
Duty rates
No active duty rates published for this code.
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.90.08
35%
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
Applies to origin: RU, BY
Effective from April 5, 2025
9903.03.01
The duty provided in the applicable subheading + 10%
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.02
The duty provided in the applicable subheading
Articles the product of any country that (1) were loaded onto a vessel at the port of loading and in transit on the final mode of transit prior to entry into the United States, before 12:01 a.m. eastern standard time on February 24, 2026; and (2) are entered for consumption, or withdrawn from warehouse for consumption, before 12:01 a.m. eastern standard time on February 28, 2026
Effective from February 24, 2026 through July 24, 2026
9903.03.03
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.04
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(iii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.05
The duty provided in the applicable subheading
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components of any country, provided for in subdivision (aa)(iv) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.06
The duty provided in the applicable subheading
Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.07
The duty provided in the applicable subheading
Articles the product of Canada, as provided for in subdivision (aa)(vi) of U.S. note 2 to this subchapter
Applies to origin: CA
Effective from February 24, 2026 through July 24, 2026
9903.03.08
The duty provided in the applicable subheading
Articles the product of Mexico, as provided for in subdivision (aa)(vii) of U.S. note 2 to this subchapter
Applies to origin: MX
Effective from February 24, 2026 through July 24, 2026
9903.03.09
The duty provided in the applicable subheading
Articles of textiles or apparel the product of Costa Rica, the Dominican Republic, El Salvador, Guatemala, Honduras or Nicaragua, as provided for in subdivision (aa)(viii) of U.S. note 2 to this subchapter
Applies to origin: CR, SV, GT, HN, NI, DO
Effective from February 24, 2026 through July 24, 2026
9903.03.10
The duty provided in the applicable subheading
Articles that are donations, by persons subject to the jurisdiction of the United States, such as food, clothing and medicine, intended to be used to relieve human suffering
Effective from February 24, 2026 through July 24, 2026
9903.03.11
The duty provided in the applicable subheading
Articles that are informational materials, including but not limited to publications, films, posters, phonograph records, photographs, microfilms, microfiche, tapes, compact disks, CD ROMs, artworks and news wire feeds
Applies to origin: IL
Effective from February 24, 2026 through July 24, 2026
9903.88.03
LIST_1
The duty provided in the applicable subheading + 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 for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Applies to origin: CN
Effective from August 23, 2018
Related CBP rulings
Country of Origin of Slide Gate Refractories used in Metallurgy or Metal Foundries (Top Plates, Gate Plates and Center Plates); Section 301 Trade Remedies
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The tariff classification of refractory ceramic tap-hole products from China.
The merchandise under consideration consists of refractory ceramic tap-hole products, comprised mainly of fused magnesia. Tap-holes are fully pre-assembled, hollow, cylindrical refractory tubes, that are either segmented or one piece, isost
The tariff classification of ceramic Metallist Intermetallic Composite Boats from China.
The merchandise under consideration, based on the submitted literature, is identified as Metallist Intermetallic Composite (IMC) boats. The Metallist IMC boats are made of ceramic, composed of boron nitride and titanium diboride hot-pressed
The tariff classification of furnaces and other equipment from Canada
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The tariff classification of ceramic roller blanks
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The tariff classification of a ceramic refractory filter from France.
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Protest 0901-94-101205; refractory articles; well blocks, solid plugs, bell bricks, center risers, bottom guides, spider bricks, runner bricks, up-gates; Additional U.S. Note 2, Chapter 69; refractory bricks; 6902.20.50; other refractory articles; 6903.20.00; other refractory ceramic goods; EN 69.02 and 69.03; John C. Rogers & Co., Inc., a/c Hoeganaes Sponge Iron Corp; Pittsburgh Plate Glass Company; HRLs 086441, 087895, 061716, 083745, and 955836
The refractory articles at issue are well blocks, solid plugs, bell bricks, center risers, bottom guides, spider bricks, runner bricks, and up-gates. The protestant states that the refractory articles are used in the "bottom pour system" by
The tariff classification of the Tetley Technegas Generatorand Technegas Patient Administration Sets from Australia.
The tariff classification of the Tetley Technegas Generatorand Technegas Patient Administration Sets from Australia.
The tariff classification of ceramic evaporation boats fromGermany.
It is stated that boat A20 is composed by weight of at least 45% of titanium diboride, 20% boron nitride and 20% aluminum nitride, while boat A0 is noted to be composed of at least 46% of titanium diboride and 50% boron nitride. These evapo
Other codes in heading 6903
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 6903.90.00.50 from each major US trading partner.
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