Super Duplex Stainless Welded Large Pipe from China
Super duplex 2507 stainless steel longitudinally welded pipe, 24-inch OD, extreme corrosion resistance for seawater injection lines. Classifies under HTS 7305.31.60.10 specifications.
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 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
• Ferrite content (40-60%) verification via metallographic examination
• Charpy impact test results at -46°C for subsea qualification
• HIC/SSCC resistance certificates for sour service environments