TP321 Stainless Steel Seamless Pipe 4-inch NPS from China
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 — China → United States
35%
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
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
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