Seamless Steel Boiler Tube OD 250mm WT 10mm from China
A seamless tube of non-alloy steel with circular cross-section, outside diameter 250mm and wall thickness 10mm, used in high-pressure boilers for heat transfer. It falls under HTS 7304.39.0048 due to its seamless construction, non-alloy steel material, OD between 190.5-285.8mm, and wall thickness under 12.7mm. These tubes are precision-engineered for structural integrity in industrial heating systems.
Duty Rate — China → United States
75%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 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
9903.03.060%Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Import Tips
• Verify seamless manufacturing via mill test certificates to avoid misclassification as welded under 7306
• Include hydrostatic test reports showing pressure resistance for boiler end-use compliance
• Label with exact OD, wall thickness, and steel grade to match statistical suffix requirements