Refinery Flare Stack Alloy Steel Riser Pipe from Mexico
High-temperature alloy steel longitudinally welded pipe >16" for flare stack risers in oil refineries. HTS 7305.31.60: other large welded alloy circular. 5Cr-0.5Mo grade.
Duty Rate — Mexico → 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
• API 530 certs for creep strength
• Specify no refractory lining
• Sections w/flanges → 7307 risk