Foamed Slag Sound Barrier Panels from Japan
Panels produced from expanded foamed slag, a byproduct of steel production, offering durable sound absorption for highway noise barriers. Falls under HTS 6806.90.00.10 as acoustical boards of expanded mineral materials, not covered by Chapter 69 exclusions. Their cellular structure provides excellent sound dampening.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide chemical analysis showing slag composition (calcium silicate base) and expansion process details
• Comply with DOT specifications if for infrastructure; avoid pitfall of classifying as mere aggregate
• Heavy items require reinforced packaging; check for Section 232 tariffs on steel byproducts