RA333 Furnace Tube from China
Seamless RA333 heat-resisting steel tube for refining furnaces, enduring carburizing atmospheres and temperatures up to 1800°F. Used in petrochemical heat exchangers. 7304.59.20.30 applies for its alloy steel composition, seamless circular form, and furnace suitability.
Duty Rate — China → United States
75%
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
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 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
• Document high-chromium/molybdenum content; comply with API standards for refinery use; declare exact wall thickness for duty calculation