Float Zone Melting Process Pump from Japan
Specialized pump for circulating inert gases or cooling liquids in float zone crystal growth systems producing high-purity silicon boules for wafers. Classified in HTS 8413.81.0040 as other pumps integral to semiconductor wafer manufacturing equipment. Ensures thermal stability during zone refining process.
Duty Rate — Japan → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include technical datasheets proving use in float zone methods; label as semiconductor equipment to qualify for potential duty relief programs
• Watch for misclassification as general industrial pumps