Carbon Steel Weld Neck Flange 4 Inch from Canada
A 4-inch carbon steel weld neck flange designed for high-pressure piping systems in industrial applications. It features a tapered hub for welding to pipes and has an inside diameter of 102 mm, classifying it under HTS 7307.91.50.10 as a flange of iron or nonalloy steel less than 360 mm ID. Used in oil refineries and chemical plants for secure connections.
Duty Rate — Canada → United States
15.5%
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
• Verify material certification to confirm nonalloy steel composition per ASTM A105 standards to avoid reclassification
• Include mill test reports (MTRs) in documentation; customs often requires proof of chemical analysis for iron/nonalloy steel
• Measure inside diameter precisely before shipment—errors over 360 mm shift to different subheading