4-1/2 inch N80-1 Casing Pipe from Japan
Seamless N80-1 alloy steel casing with 4-1/2 inch OD, threaded and coupled with premium EUE connections for shallow oil production wells. Wall thickness less than 12.7 mm provides optimal strength-to-weight ratio for liner applications. Classified in 7304.29.31.10 for its seamless alloy steel construction and drilling-specific design.
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
• Ensure marking includes API grade, size, and seamless designation per API Spec 5CT
• Provide collapse and burst test data from MTC for customs valuation support
• Avoid common pitfall of declaring as 'line pipe' which changes classification to 7304.90