Grade T91 Superheater Seamless Tube from Japan
Advanced T91 (9% Cr, 1% Mo, V-modified) seamless alloy tube, 15.75-inch (400 mm) OD for modern ultra-supercritical superheaters. Meets HTS 7304.59.20.70 as other alloy steel, seamless, superheater-suited, within OD limits.
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
• Normalize and temper heat treatment certs mandatory; verify no wire drawing (per chapter note); declare as 'other alloy' to avoid stainless misclass