Grade T91 Superheater Seamless Tube from China
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 — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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
Import Tips
• Normalize and temper heat treatment certs mandatory; verify no wire drawing (per chapter note); declare as 'other alloy' to avoid stainless misclass