Chrome-Moly P91 Alloy Boiler Tube from China
High-temperature P91 (9Cr-1Mo) alloy steel tube for supercritical boiler superheaters and reheaters. Classifies in 7306.90.5000 as other alloy steel tubes, excluding line pipe or casing applications.
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
• Mandatory ASME SA335 certification and hydrostatic test reports for pressure vessel code compliance
• Declare exact Cr/Mo percentages to confirm alloy status vs carbon steel
• Watch for Section 232 tariffs on steel derivatives; origin certificates critical