Clay
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths: > Other: > Bricks > Clay
Duty Rate (from China)
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
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 6902.90.10.10
High-Alumina Fireclay Refractory Brick
A dense refractory brick made primarily from fireclay, fired at high temperatures to withstand extreme heat up to 1700°C. Used in furnace linings and kilns for its excellent thermal shock resistance and abrasion resistance. Classified under HTS 6902.90.10.10 as a clay-based refractory brick, distinct from siliceous or high-silica variants.
Standard Fireclay Refractory Brick
Standard-sized refractory brick composed of fireclay, designed for boiler and incinerator linings with service temperatures up to 1500°C. Offers good mechanical strength and chemical resistance to slags. Falls under HTS 6902.90.10.10 specifically for clay-composed refractory bricks other than siliceous types.
Shaped Fireclay Refractory Brick for Glass Furnaces
Custom-shaped fireclay bricks designed specifically for glass tank furnace crowns and walls, resisting molten glass corrosion at 1500°C+. Made from selected clay blends and high-fired. Classed under 6902.90.10.10 as clay refractory bricks.
Fireclay Checker Brick for Regenerators
Perforated fireclay bricks arranged in checkerwork patterns for heat recovery regenerators in glass and steelmaking furnaces. Optimized channels for gas flow at 1300-1400°C service. Specifically clay refractory bricks under HTS 6902.90.10.10.
Super-Duty Fireclay Refractory Brick
Premium super-duty fireclay brick with superior creep resistance for crown construction in reheating furnaces serving at 1500°C+. Low iron formulation enhances slag resistance. HTS 6902.90.10.10 clay brick classification.
Plastic Fireclay Refractory Brick
Fireclay brick produced via plastic forming method for complex shapes in boiler settings and ladle backup. Excellent workability and fired strength up to 1480°C. Clay-based refractory brick under 6902.90.10.10.
Insulating Fireclay Refractory Brick
Lightweight insulating brick made from fireclay with high porosity for thermal insulation in high-temperature furnaces. Maintains structural integrity up to 1400°C while minimizing heat loss. HTS 6902.90.10.10 covers this clay-based refractory constructional good.
Acid-Resistant Fireclay Refractory Brick
Fireclay brick engineered for resistance to acidic slags and gases in chemical processing kilns. Fired from high-silica clay content for durability at 1350-1500°C. Precisely matches HTS 6902.90.10.10 for other clay refractory bricks.
Dense Fireclay Backup Refractory Brick
High-density fireclay brick used as backup lining behind wear-resistant courses in steel ladles and reheat furnaces. Provides thermal stability up to 1550°C. HTS 6902.90.10.10 applies to this clay refractory brick type.
Medium-Duty Fireclay Refractory Brick
Versatile medium-duty fireclay brick for general high-temperature applications like pottery kilns and backup furnace linings up to 1450°C. Balanced properties of strength and insulation. Clay construction fits HTS 6902.90.10.10 perfectly.