Cold-Drawn Boiler Economizer Tube P91 Alloy from China
Cold-drawn seamless P91 (Grade 91) alloy steel tube for boiler economizers, enhancing fuel efficiency through preheating. Known for creep strength in 9Cr-1Mo-V composition. Under 7304.51.50.45 for boiler 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
• Require Q&T (quench & temper) certification specific to P91 processing requirements
• Monitor for special processing rules on high-chrome alloys at customs