SA-213 TP347H Superheater Tube from China
TP347H stabilized stainless seamless tubes for superheaters in utility boilers, resisting intergranular corrosion after welding. Heavy wall construction handles 600°C+ steam conditions. Under 7304.59.20 for alloy steel tubes in superheaters.
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
• Specify H-grade (high carbon) in documentation for proper alloy recognition
• Mill test reports must include tensile and creep rupture data