Helium Liquefaction Plant with Plate-Fin HX from Japan
Industrial system for liquefying helium gas employing multiple brazed aluminum plate-fin heat exchangers in a Claude cycle configuration for superconducting applications. HTS 8419.60.10.00 classification applies due to the integral brazed plate-fin exchangers performing the essential gas cooling and liquefaction functions.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include cycle diagrams showing plate-fin exchanger integration to distinguish from coil-wound helium systems
• Certify purity levels and leak test results as helium systems require extreme vacuum integrity documentation
• Declare as complete machinery, not parts, to avoid separate classification under 8419.90