Carburizing Furnace Seamless Retort Tube from Japan
Seamless heat-resisting steel tube for carburizing furnace retorts, resisting carbon diffusion at 950°C atmospheres. HTS 7304.59.60.00 designation for seamless circular alloy steel tubes engineered for prolonged high-temperature exposure.
Duty Rate — Japan → 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
• Document resistance to carburizing atmospheres via lab exposure tests
• Galvanized interior coatings disqualify from plain tube classification
• Long lengths (>10m) may require special transport declarations affecting valuation