P5 Alloy Seamless Refining Furnace Tube from Japan
ASTM A335 P5 (5Cr-0.5Mo) seamless tube, 419 mm OD, for transfer lines in petroleum refining furnaces. Withstands carburizing atmospheres at 650°C. HTS 7304.59.20.80 covers its alloy steel seamless design for refining furnaces exceeding 406.4 mm OD.
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
• Certify minimum wall thickness for furnace tube collapse pressure; customs audits high-pressure claims
• Distinguish from boiler tubes via end-use letters from buyer specifying refining application
• Package in wooden crates with moisture protection; corrosion claims common in transit disputes