Chrome-Moly P91 Alloy Boiler Tube from Mexico
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 — Mexico → United States
10%
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
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