Cryogenic BAHX for Helium Refrigeration Systems from Mexico
Ultra-low temperature brazed aluminum plate-fin heat exchanger for helium liquefaction and refrigeration cycles in scientific applications. Falls under HTS 8419.50.10.00 for specialized cryogenic heat exchange.
Duty Rate — Mexico → United States
29.2%
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
• Certify leak rates below 10^-9 atm-cc/sec and material purity >99.999% aluminum
• Include JT valve integration details if pre-assembled
• Research equipment may qualify for duty-free academic imports