Large Stainless Steel Welded Stack Pipe from China
610 mm OD longitudinally welded stainless steel stack pipe for industrial chimney exhaust systems handling acidic gases. Fits HTS 7305.31.60.10 as large circular welded stainless pipe.
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
• Thermal expansion coefficients must be documented for stack design approval
• Lining material declaration (if brick/ceramic lined) affects classification
• Elevation/height specs required for wind load calculations in permitting