Cold-Reduced Boiler Wall Tube Grade T91 from China
Cold-reduced T91 seamless tube for furnace wall panels in supercritical boilers. Advanced 9Cr steel for ultra-high efficiency plants. Suitable for boilers under 7304.51.50.45.
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
• Normalize & temper certs mandatory for T91; reject inadequate heat treatment
• Dimension tolerances tighter for wall tubes; measure before shipping