20-inch OD Alloy Steel Drilling Casing with BTC Threads from Japan
Welded alloy steel casing pipe, 20-inch external diameter with Buttress Threaded and Coupled (BTC) connections, used to case oil wells during rotary drilling. Meets HTS 7305.20.80.00 criteria as other large-diameter (>406.4 mm) alloy steel casing for oil/gas drilling applications. Provides structural integrity in deviated and horizontal wells.
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
• Document threaded couplings separately if imported unassembled to avoid set classification issues
• Ensure 'casing' terminology in commercial invoices matches drilling specifications per API standards
• Conduct material analysis for alloy content (>1.65% manganese or other elements) to distinguish from carbon steel