3-1/2 inch Super Duplex Tubing from Japan
Welded super duplex stainless (2507 grade) tubing, 3-1/2 inch, for ultra-corrosive oil/gas wells with high chloride content. HTS 7306.21.80 covers this welded stainless product designed explicitly for drilling tubing applications. Maximizes uptime in subsea completions.
Duty Rate — Japan → United States
50%
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
9903.05.900%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
• Super duplex requires ferrite content verification (40-60%) in material certs
• Use threaded-and-coupled (T&C) descriptions accurately for connection type