Refining Furnace Seamless Steel Tube from China
Extra-large OD (>285.8 mm) seamless non-alloy steel tube for refining furnace applications, ensuring durability under extreme heat. Classified in 7304.39.0008 for seamless iron/non-alloy steel construction, circular profile, and explicit 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
• Reference ASTM A335 or equivalent for furnace-grade specs in entry docs
• Avoid classifying as drill pipe (7304.22) by proving thermal not drilling end-use
• Galvanized versions may require separate declaration under coating provisions