7304.59.80.35/SA-335 Grade P11 Seamless Alloy Steel Pipe/China

SA-335 Grade P11 Seamless Alloy Steel Pipe from China

This seamless pipe made from chromium-molybdenum alloy steel (Grade P11) has an outside diameter of 152.4 mm and wall thickness of 15 mm, designed for high-temperature service in power plants and refineries. It falls under HTS 7304.59.80.35 due to its circular cross-section, alloy steel composition, OD between 114.3-190.5 mm, and specified wall thickness range. These pipes are produced via hot-finished or cold-drawn processes without welding.

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

9903.05.900%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; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter

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Import Tips

• Obtain mill test certificates (MTC) verifying chemical composition, mechanical properties, and seamless production to comply with ASTM A335 standards

• Ensure proper marking of grade, heat number, and dimensions per ASME B36.10M to avoid reclassification during customs exam

• Declare exact OD and wall thickness measurements; minor variances can shift to adjacent statistical suffixes