8455.30.00.35/Czochralski Crystal Puller Work Roll/China

Czochralski Crystal Puller Work Roll from China

A cast steel work roll used in the Czochralski method crystal pullers for producing monocrystalline silicon boules from which semiconductor wafers are sliced. It falls under HTS 8455.30.0035 as a cast steel roll for rolling mills, weighing not over 2,268 kg, specifically adapted for precise material processing in semiconductor boule formation. The roll's surface ensures uniform pulling and minimal contamination during crystal growth.

Duty Rate — China → United States

40%

Rate breakdown

9903.82.1015%Except as provided for in headings 9903.82.12, 9903.82.17 and 9903.85.68, derivative aluminum and steel articles with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent, as provided for in subdivision (f) of U.S. note 16 to this subchapter

9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]

9903.03.060%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

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Import Tips

• Verify roll weight does not exceed 2,268 kg and confirm cast steel composition via mill certificates to avoid reclassification

• Provide detailed engineering specs showing semiconductor end-use for potential duty relief under specialized programs

• Ensure rolls are free of contaminants; common pitfall is improper cleaning documentation leading to rejection