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
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• API 530 certs for creep strength
• Specify no refractory lining
• Sections w/flanges → 7307 risk