Seamless Alloy Steel Boiler Tube 250mm OD 25mm WT from China
A seamless tube made from alloy steel with a circular cross-section, outside diameter of 250 mm, and wall thickness of 25 mm, designed for high-pressure boiler applications. It falls under HTS 7304.59.80.55 due to its seamless construction, alloy steel material, specified OD range (190.5-285.8 mm), and thick wall of 19 mm or more. These tubes are critical for heat exchangers in power plants.
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
• Verify alloy steel composition meets Chapter 73 definitions; provide mill test certificates for customs verification
• Ensure seamless manufacturing process documentation to distinguish from welded pipes under 7305/7306
• Measure OD and wall thickness precisely; common pitfall is misclassification due to rounding errors