TP321 Stainless Steel Seamless Pipe 4-inch NPS from Canada
Seamless TP321 stainless steel pipe, 4-inch nominal pipe size, for high-temperature chemical processing with circular cross section. Falls under HTS 7304.49.00 as other seamless stainless pipes not cold-worked or for specific exclusions like boilers. Ideal for corrosive environments due to stabilized alloy.
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
• Submit ASTM A312 compliance cert confirming seamless and grade TP321 for accurate duty assessment
• For large diameters, provide pressure rating docs to rule out boiler tube classification