Magnesia-Herringbone Refractory Bricks from Japan
Herringbone-patterned magnesia bricks with >50% MgO for improved gas flow in tunnel kilns and reheating furnaces. The angled design prevents brick movement under thermal cycling. HTS 6902.10.50.00 classification for magnesium refractory bricks.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Specify interlocking pattern in technical drawings for classification support
• Test for thermal expansion compatibility with furnace steel shell
• Declare quantities by furnace zone application to justify refractory use