SA-213 T92 Superheater Tube from China
High-strength T92 martensitic alloy steel seamless tube for superheaters in ultra-supercritical boilers, featuring 432 mm OD. Optimized for temperatures above 600°C with superior oxidation resistance. Classified in 7304.59.20.80 for its large diameter, seamless alloy steel construction suited for superheaters.
Duty Rate — China → United States
75%
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
9903.91.0125%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
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Include normalization + temper heat treatment certification; improper processing voids boiler code compliance
• Customs often requires proof of 'seamless' via ultrasonic testing reports to distinguish from welded ERW pipes
• Label with 'For Boiler Use Only' to support specific suitability; vague descriptions risk general tube classification