321 Stabilized Stainless Superheater Tube from Canada
Titanium-stabilized 321 stainless welded tubes designed for superheater service in fossil fuel boilers, with wall thickness exceeding 1.65 mm. Prevents sensitization during high-temperature exposure. HTS 7306.40.50.15 designation for superheater applications.
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
• Include stabilization heat treatment certificates from accredited labs
• Document maximum operating temperature and pressure ratings
• Ensure declaration matches exact statistical dimensions for accurate duty assessment