Alloy Steel Superheater Tube ASTM A312 TP310S from Canada
Welded circular tube of TP310S alloy steel per ASTM A312, wall thickness 1.65 mm or more, optimized for superheater sections in fossil fuel power plants. High-temperature oxidation resistance makes it ideal for steam superheating. Covered by 7306.50.5010 for welded alloy tubes in superheaters.
Duty Rate — Canada → 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
• ASME or ASTM certification mandatory; lack thereof leads to general tube classification
• Specify 'for superheater service' in commercial invoice to support tariff shift
• Avoid bundling with dissimilar tubes; mixed shipments complicate verification