U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
3816.00.0010
$11.4M monthly imports
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Ruling Age
32 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-04-29 · Updates monthly
The tariff classification of Fireclay from Canada.
NY 886711 Sept 28, 1993 CLA-2-38:S:N:N3:226 888075 CATEGORY: Classification TARIFF NO.: 3816.00.0010 Mr. David Walser Arthur J. Humphreys Div. Border Brokerage Co., Inc. P.O. Box 249 Sumas, Washington 98295 RE: The tariff classification of Fireclay from Canada. Dear Mr. Walser: This is in response to your request for a tariff classification ruling, on behalf of your client, Clayburn Industries Ltd., dated May 24, 1993. The sample which you have submitted (Calcined Fireclay P.) is a powdered substance which you state has been "formulated for aluminum electrolytic cells as a bedding layer under the carbon cathodes." Your diagram and technical data sheet indicate that the product is a protective "sealing layer" for brick pots. We have submitted the sample to the Customs Laboratory. The lab has determined that the item has the properties of a calcined clay and is suitable as a mortar material or high temperature furnace liner. Since you have stated that the fireclay is "formulated", we presume that it is artificially created. The provision applicable to the Calcined Fireclay P. will be subheading 3816.00.0010, Harmonized Tariff Schedule of the United States (HTS), which provides for Refractory cements, mortars, concretes and similar compositions, other than products of heading 3801: Clay. The rate of duty will be 3 percent ad valorem. Goods classifiable under subheading 3816.00.0010, HTS, which have originated in the territory of Canada, will be entitled to a Free rate of duty under the United States-Canada Free Trade Agreement (FTA) upon compliance with all applicable regulations. This ruling is being issued under the provisions of Section 177 of the Customs Regulations (19 C.F.R. 177). A copy of this ruling letter should be attached to the entry documents filed at the time this merchandise is imported. If the documents have been filed without a copy, this ruling should be brought to the attention of the Customs officer handling the transaction. Sincerely, Jean F. Maguire Area Director New York Seaport