7304.39.00.06/Seamless Boiler Tube 250mm OD ASTM A106 Grade B/China

Seamless Boiler Tube 250mm OD ASTM A106 Grade B from China

A seamless carbon steel tube with an outside diameter of 250 mm, designed specifically for high-pressure boiler applications in power plants. It meets ASTM A106 Grade B specifications for elevated temperature service and is suitable for use in boilers and superheaters due to its seamless construction ensuring pressure integrity. Classified under 7304.39.0006 for its circular cross-section, non-alloy steel composition, and OD range of 190.5-285.8 mm.

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

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Import Tips

• Verify seamless construction via mill test certificates (MTC) as welded tubes shift to 7304.90 or Chapter 73 headings

• Ensure ASTM/ANSI material specs match; non-compliance leads to reclassification or penalties

• Provide end-use documentation proving boiler/superheater suitability to avoid general pipe duties