904L Stainless Refinery Heater Tube from China
Seamless 904L (N08904) high nickel stainless tube for convection sections of refinery process heaters. Copper-bearing alloy resists polythionic acid stress corrosion. 7304.49.0045 for refining furnace suitability.
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
• Copper content verification (>1.0%) critical for 904L PCC resistance
• Heater zone location (radiation vs convection) affects material choice docs