Carbon Steel Flange 18-Inch ID from China
A large carbon steel flange with an inside diameter of 450 mm, designed for connecting pipes in industrial water supply systems. It falls under HTS 7307.91.5050 as a flange of iron or nonalloy steel with an inside diameter exceeding 360 mm. These are typically used in heavy-duty piping for their durability and weldability.
Duty Rate — China → United States
80.5%
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Verify inside diameter measurement exceeds 360 mm with precise caliper documentation to avoid misclassification to smaller flange subheadings
• Provide mill test certificates confirming nonalloy steel composition (max 0.25% carbon) for customs valuation and anti-dumping checks
• Ensure markings for pressure rating (e.g
• ANSI 150#) to demonstrate compliance with ASME B16.5 standards