API 5L Grade B Seamless Steel Pipe 4-inch OD 0.5-inch Wall from China
A seamless carbon steel pipe with 101.6 mm OD and 12.8 mm wall thickness, made from non-alloy steel for oil and gas transmission lines. It falls under HTS 7304.39.0032 due to its circular cross-section, OD between 38.1-114.3 mm, and wall thickness over 12.7 mm. Commonly used in high-pressure pipelines requiring structural integrity.
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
Import Tips
• Verify seamless certification via NDT reports (ultrasonic/hydrostatic testing) as required for API 5L specs to avoid reclassification
• Include mill test certificates (MTC) showing chemical composition and mechanical properties for non-alloy steel confirmation
• Measure OD and wall thickness precisely; tolerances under 12.7 mm wall shifts to thinner subheadings, risking underpayment penalties