Type 317LMN Boiler Economizer Tube from Japan
Seamless Type 317LMN stainless tube for boiler economizers recovering waste heat, with nitrogen-enhanced strength. Circular cross-section for flue gas heat transfer. Classifies under 7304.49.0045 as suitable for boilers despite economizer function.
Duty Rate — Japan → 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
• Nitrogen analysis proving LMN variant essential for classification
• Economizer qualifies as 'boiler' use per HTS language