Type 317LMN Boiler Economizer Tube from China
Seamless Type 317LMN stainless tube for boiler economizers recovering waste heat, with nitrogen-enhanced strength. Circular cross-section for flue gas heat transfer. Classifies under 7304.49.0045 as suitable for boilers despite economizer function.
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
• Nitrogen analysis proving LMN variant essential for classification
• Economizer qualifies as 'boiler' use per HTS language