The tariff classification of ceramic rectifier blocks from Germany.
Issued September 10, 2003 by U.S. Customs and Border Protection.
Tariff classification
HTS codes: 6909.19.5095
Headings: 6909
Product description
These rectifier blocks, composed of more than 50 percent of silica and 25 percent of alumina, are incorporated in power generators for use on an emission structure and around the periphery of anti-emission catalyst blocks. They function as airflow strengtheners (rectifiers) at high temperatures (but less than 1500 degrees centigrade) to create laminar flow (gas flow traveling in regular paths), thereby preventing turbulent or angular flow from causing erosion of these catalyst blocks. Further, it is noted that these rectifiers are used with the catalyst blocks to reduce the emission of nitrous oxide from coal and gas plants. You claim that these ceramic rectifier blocks may be classified under subheading 6902.20.50, Harmonized Tariff Schedule of the United States (HTS), which provides for refractory bricks, blocks…containing by weight more than 50 percent of alumina, of silica or a mixture or compound of these products: other than of bricks, or alternatively classified under subheading 6902.90.50, HTS, which provides for refractory bricks, blocks…other than bricks that do not contain by weight more than 50 percent of alumina, of silica or a mixture or compound of these products. However, since these ceramic rectifier blocks are found not to be “refractory” for tariff purposes, consideration of classification under subheadings 6902.20.50 and 6902.90.50, HTS, is precluded.
CBP rationale
The applicable subheading for the ceramic (cordierite) rectifier blocks will be 6909.19.5095, Harmonized Tariff Schedule of the United States (HTS), which provides for ceramic wares for laboratory, chemical or other technical uses, other than of porcelain or china, other.
Full text
NY J88205 September 10, 2003 CLA-2-69:RR:NC:2:227 J88205 CATEGORY: Classification TARIFF NO.: 6909.19.5095 Ms. Sherry Watson Rauschert Industries 351 Industrial Park Road Madisonville, TN 37354 RE: The tariff classification of ceramic rectifier blocks from Germany. Dear Ms. Watson: In your letter dated August 14, 2003, you requested a tariff classification ruling. The subject merchandise, based on the information and sample submitted, is stated to be refractory ceramic (cordierite) honeycomb rectifier blocks. These rectifier blocks, composed of more than 50 percent of silica and 25 percent of alumina, are incorporated in power generators for use on an emission structure and around the periphery of anti-emission catalyst blocks. They function as airflow strengtheners (rectifiers) at high temperatures (but less than 1500 degrees centigrade) to create laminar flow (gas flow traveling in regular paths), thereby preventing turbulent or angular flow from causing erosion of these catalyst blocks. Further, it is noted that these rectifiers are used with the catalyst blocks to reduce the emission of nitrous oxide from coal and gas plants. You claim that these ceramic rectifier blocks may be classified under subheading 6902.20.50, Harmonized Tariff Schedule of the United States (HTS), which provides for refractory bricks, blocks…containing by weight more than 50 percent of alumina, of silica or a mixture or compound of these products: other than of bricks, or alternatively classified under subheading 6902.90.50, HTS, which provides for refractory bricks, blocks…other than bricks that do not contain by weight more than 50 percent of alumina, of silica or a mixture or compound of these products. However, since these ceramic rectifier blocks are found not to be “refractory” for tariff purposes, consideration of classification under subheadings 6902.20.50 and 6902.90.50, HTS, is precluded. The applicable subheading for the ceramic (cordierite) rectifier blocks will be 6909.19.5095, Harmonized Tariff Schedule of the United States (HTS), which provides for ceramic wares for laboratory, chemical or other technical uses, other than of porcelain or china, other. The rate of duty will be 4 percent ad valorem. This ruling is being issued under the provisions of Part 177 of the Customs Regulations (19 C.F.R. 177). A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported. If you have any questions regarding the ruling, contact National Import Specialist George Kalkines at 646-733-3028. Sincerely, Robert B. Swierupski Director, National Commodity Specialist Division
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