SA-335 Grade P11 Seamless Alloy Steel Pipe from Canada
This seamless pipe made from chromium-molybdenum alloy steel (SA-335 P11 grade) has a circular cross-section with an outside diameter between 285.8 mm and 406.4 mm and wall thickness of 12.7-19 mm. It falls under HTS 7304.59.80.65 as other seamless tubes/pipes of alloy steel, suitable for high-temperature boiler service. Commonly used in power plants for superheater tubes.
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
• Obtain material test certificates (MTC) confirming alloy composition and seamless manufacturing per ASTM A335 standards
• Verify exact OD and wall thickness measurements to ensure classification within 7304.59.80.65 subheading
• Include hydrostatic test reports; common pitfall is misclassification as welded pipe under Chapter 73 heading 7305