SMO 254 Seamless Superheater Tube from China
Seamless SMO 254 (6Mo) super austenitic stainless tube for superheaters in biomass boilers, with exceptional chloride pitting resistance. Circular cross-section for radiant and convection zones. Fits 7304.49.0045 for superheater end-use and premium stainless steel grade.
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 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
• Minimum 6% molybdenum content certification critical for SMO 254 classification
• Specify biomass vs fossil fuel service to guide material selection compliance