60mm OD x 25mm Wall 9Cr-1Mo Alloy Tube from China
Grade 91 (9Cr-1Mo-V) seamless alloy tube, 60mm OD x 25mm wall, for advanced supercritical boilers. HTS 7304.59.80.25 classification applies to its heavy wall thickness and alloy steel seamless construction. Critical for next-generation power plant efficiency.
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
• Grade 91 requires normalization + temper heat treatment certification for customs acceptance
• Distinguish from P91 welding consumables which classify differently
• High value requires detailed cost breakdown to prevent undervaluation claims