347H Stainless Refining Furnace Tube from China
Niobium-stabilized 347H welded stainless tubes for high-temperature refining furnace convection sections, thick-walled construction. Creep and corrosion resistant. HTS 7306.40.50.15 for refining furnace 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
• Certify stabilization elements (Nb+Ta) content for high-temperature grade
• Include furnace zone operating profiles in end-use documentation
• Verify against exclusion process for Section 232 steel tariffs