Cold-Reduced Heat Exchanger Tube ASTM A213 T11 from China
Note: T11 is alloy, using A179 equivalent nonalloy for accuracy. Seamless cold-reduced carbon steel tube ASTM A179 variant for shell-and-tube heat exchangers in refining. Thin wall, circular profile for efficient heat transfer in corrosive environments. HTS 7304.31.60.10 applies to cold-formed seamless tubes designated for heat exchangers.
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
• Include NACE MR0175 certification if for sour service in oil refining applications
• Declare precise end-use in commercial invoice to justify specialized classification
• Watch for reclassification if sold without specified exchanger use