Helium Liquefaction Plant with Plate-Fin HX from Mexico
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 — Mexico → United States
14.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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