Superheater Seamless Alloy Tube 13.5-inch OD from China
High-temperature seamless tube of Grade T91 alloy steel, 342 mm OD and 7 mm wall thickness, for superheater sections in fossil fuel boilers. HTS 7304.59.80.60 applies to its seamless alloy steel construction, mid-range OD, and thin walls optimizing heat transfer. Meets rigorous creep strength requirements.
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 normalized-and-tempered condition per ASME specs for proper alloy tube status
• Document wall uniformity via ultrasonic testing reports for customs inspection