Seamless Alloy Steel Boiler Tube 250mm OD 25mm WT from Canada
A seamless tube made from alloy steel with a circular cross-section, outside diameter of 250 mm, and wall thickness of 25 mm, designed for high-pressure boiler applications. It falls under HTS 7304.59.80.55 due to its seamless construction, alloy steel material, specified OD range (190.5-285.8 mm), and thick wall of 19 mm or more. These tubes are critical for heat exchangers in power plants.
Duty Rate — Canada → 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
• Verify alloy steel composition meets Chapter 73 definitions; provide mill test certificates for customs verification
• Ensure seamless manufacturing process documentation to distinguish from welded pipes under 7305/7306
• Measure OD and wall thickness precisely; common pitfall is misclassification due to rounding errors