Alloy 600 Seamless Heater Exchanger Tube from Mexico
Seamless Inconel Alloy 600 tube for fire-tube heaters and heat exchangers in petrochemical service, offering oxidation resistance above 1000°C. Classified in HTS 7304.59.60.00 for heat-resisting seamless steel tubes of circular cross-section.
Duty Rate — Mexico → 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
• Require U-tube or straight tube certifications distinguishing from finned heat exchanger parts
• Confirm no internal threading that could classify as drill pipe or casing
• Undervaluing scrap content in alloys leads to penalties; declare true alloy value