TP347H Seamless Stainless Superheater Tube from Mexico
High-temperature resistant TP347H seamless stainless steel tube with circular cross-section, optimized for superheaters in fossil fuel boilers. Features enhanced creep strength for prolonged exposure to steam at over 600°C. Falls under 7304.49.0045 for its specific suitability in superheaters and seamless stainless construction.
Duty Rate — Mexico → 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
• Provide heat treatment records proving stabilization annealing for TP347H grade to support high-temperature end-use classification
• Declare exact dimensions and pressure ratings in entry docs to distinguish from general-purpose tubes