DOT 3HT Hydrogen Fuel Cylinder from Canada
Heat-treated seamless steel cylinder marked DOT 3HT for hydrogen fuel cells or storage, no overwrap. Designed for ultra-high pressures per 49 CFR. Used in automotive and energy applications.
Duty Rate — Canada → United States
50%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) 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
• Hydrogen-specific hazmat declarations required even if empty
• Track alloy composition (e.g
• 4130 steel) for material verification
• Exemptions (DOT-E) need full FAA/DOT approval copies