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Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths. > Other > Other
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Subheadings
Products classified under Tariff item 6902.90
90% Alumina Refractory Bricks
90% alumina refractory bricks are high-purity ceramic constructional goods fired after shaping, designed for critical zones in aluminum smelters and cement kilns. Their high fired density and resistance to molten metal and alkali corrosion qualify them as refractory ceramic products under this tariff item.
6902.90.00Acid-Resistant Fireclay Refractory Brick
An acid-resistant fireclay refractory brick engineered for service in chemical processing kilns where acidic slags and gases are present. Fired from high-silica clay at temperatures between 1350°C and 1500°C, it provides durable performance in corrosive environments. This product qualifies under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Andalusite Refractory Brick
Andalusite refractory bricks incorporate andalusite for enhanced thermal shock resistance, ideal for coke oven doors and reheat furnace roofs. They are fired ceramic goods shaped from clay-silica mixes. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Andalusite Refractory Bricks
Andalusite refractory bricks are fired ceramic constructional goods that incorporate andalusite to form mullite, offering excellent thermal shock resistance for coke ovens and reheat furnaces. Their dimensional stability and high-temperature performance place them under this tariff item for other refractory bricks.
6902.90.00Andalusite Refractory Tile
Andalusite refractory tiles are fired from andalusite ore to produce a product with excellent thermal shock resistance, ideal for torpedo ladle linings in steel plants. The tiles are shaped and fired to withstand rapid temperature changes and slag attack. They are classified under tariff item 6902.90.00 as refractory ceramic constructional goods other than those of siliceous fossil meals.
6902.90.00Bauxite-Based Refractory Bricks
Bauxite-based refractory bricks are fired ceramic constructional goods made from calcined bauxite aggregate, providing economical high-duty performance for rotary cement kilns. Their spinel bonding developed during firing enhances slag penetration resistance, classifying them under this tariff item.
6902.90.00Bauxite Refractory Brick
Bauxite refractory bricks are manufactured from bauxite ore, fired to create a high-density product with good load-bearing capacity at elevated temperatures. They are commonly used in lime kilns and incinerators where mechanical strength and heat resistance are critical. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Chamotte Refractory Block
Chamotte refractory blocks are made from fired clay grog, offering stable volume and low deformation under high heat, making them suitable for general furnace construction. The blocks are fired after shaping to achieve their refractory properties. They are classified under tariff item 6902.90.00 as refractory ceramic constructional goods other than those of siliceous fossil meals.
6902.90.00Chrome-Magnesite Refractory Bricks
Chrome-magnesite refractory bricks are fired ceramic constructional goods blending chrome ore with dead-burned magnesite, offering superior resistance to ferrous slags in electric arc furnaces. Their balanced properties for steel ladle linings qualify them as other refractory bricks under this tariff item.
6902.90.00Cordierite Refractory Brick
Cordierite refractory bricks are fired from a magnesia-alumina-silicate composition, providing excellent thermal shock resistance for use in tunnel kilns in the ceramics industry. The bricks maintain structural integrity under rapid temperature fluctuations. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Dense Fireclay Backup Refractory Brick
A dense fireclay backup refractory brick used behind wear-resistant courses in steel ladles and reheat furnaces. It provides thermal stability up to 1550°C and is fired from high-density clay to ensure structural integrity. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Direct-Bonded Magnesia Refractory Bricks
Direct-bonded magnesia refractory bricks are fired ceramic constructional goods achieving high purity through high-temperature firing that creates ceramic bonding between periclase grains. Used in converter mouths and hot metal ladles, they fall under this tariff item for other refractory bricks.
6902.90.00Electrocast Refractory Blocks (Brick Size)
Electrocast refractory blocks in brick size are fired ceramic constructional goods melted and cast via electric arc, producing a bubble-free high-alumina structure for glass crown applications. Their seamless microstructure and standard brick dimensions classify them under this tariff item.
6902.90.00Fireclay Checker Brick for Regenerators
A perforated fireclay checker brick arranged in checkerwork patterns for heat recovery regenerators in glass and steelmaking furnaces. Optimized channels facilitate gas flow at service temperatures of 1300-1400°C. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Fireclay Refractory Block
Fireclay refractory blocks are produced from high-temperature fired clay, offering plasticity and strength for use in blast furnace hearths and cement kilns. They absorb shocks and resist abrasion in demanding industrial environments. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Fireclay Refractory Brick
Fireclay refractory bricks from high-alumina fireclay provide economical lining for boiler walls and ladles, with good abrasion resistance. They are properly fired after room-temperature shaping per Chapter 69 requirements. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Fireclay Refractory Bricks
Fireclay refractory bricks are fired ceramic constructional goods made from high-temperature-fired clay with 30-45% alumina, serving as general-purpose linings in boilers and incinerators. Their cost-effective thermal insulation and slag resistance place them under this tariff item.
6902.90.00High-Alumina Fireclay Refractory Brick
A high-alumina fireclay refractory brick fired at high temperatures to withstand extreme heat up to 1700°C. It is used in furnace linings and kilns for excellent thermal shock resistance and abrasion resistance. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00High Alumina Refractory Bricks
High alumina refractory bricks are fired ceramic products composed primarily of aluminum oxide, designed to withstand temperatures exceeding 1700°C. Used in furnace linings and kilns for superior thermal performance, they qualify as other refractory bricks under this tariff item.
6902.90.00High-Alumina Refractory Firebrick
High-alumina refractory firebricks are composed primarily of alumina and silica, fired at high temperatures to withstand extreme heat above 1500°C. They are used in furnace linings and kilns for excellent thermal shock resistance. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Insulating Firebrick (IFB) 26 Grade
IFB 26 grade insulating firebricks are fired ceramic constructional goods with low thermal conductivity due to high porosity, made from clay-kaolin mixes for backup furnace insulation. Their service limit around 1430°C makes them suitable for energy-efficient linings under this tariff item.
6902.90.00Insulating Fireclay Refractory Brick
A lightweight insulating fireclay brick with high porosity for thermal insulation in high-temperature furnaces. It maintains structural integrity up to 1400°C while minimizing heat loss. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Insulating Refractory Brick
Insulating refractory bricks are lightweight, fired from vermiculite-clay mixes to reduce heat loss in furnace walls and backup linings. They feature low thermal conductivity and high porosity, making them ideal for thermal insulation in high-temperature equipment. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Kaolin-Based Refractory Brick
Kaolin-based refractory bricks utilize calcined kaolin for moderate-temperature applications like backup linings in cement kilns. They are fired ceramic constructional goods meeting Chapter 69 criteria. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Low Porosity Fireclay Bricks
Low porosity fireclay bricks are fired ceramic constructional goods that minimize slag penetration in blast furnace stove checkers through a dense vitrified structure from high firing. Their balance of insulation and strength classifies them under this tariff item for other refractory bricks.
6902.90.00Magnesia-Chrome Refractory Brick
Magnesia-chrome refractory bricks combine magnesia and chrome ore, fired to create dense blocks for lining steelmaking furnaces and rotary kilns. They offer superior resistance to basic slags and high temperatures, making them essential in metallurgical processes. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Magnesia Chrome Refractory Bricks
Magnesia chrome refractory bricks are fired ceramic constructional goods combining magnesium oxide and chromite for extreme resistance to basic slags in steelmaking furnaces. Maintaining structural integrity up to 2000°C, they fall under this tariff item for other refractory bricks.
6902.90.00Medium-Duty Fireclay Refractory Brick
A versatile medium-duty fireclay brick for general high-temperature applications like pottery kilns and backup furnace linings up to 1450°C. It offers balanced properties of strength and insulation. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Mullite Refractory Brick
Mullite refractory bricks, made from sintered mullite (3Al2O3·2SiO2), offer superior creep resistance for glass tank regenerator checkers and rotary kilns. They are fired after shaping to ensure impermeability to gases. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Phosphate-Bonded High Alumina Bricks
Phosphate-bonded high alumina refractory bricks use phosphoric acid binders fired to develop mullite-phosphate bonds for abrasion resistance in cyclone burners. Their enhanced strength at elevated temperatures qualifies them as other refractory bricks under this tariff item.
6902.90.00Plastic Fireclay Refractory Brick
A fireclay brick produced via plastic forming method for complex shapes in boiler settings and ladle backup. It offers excellent workability and fired strength up to 1480°C. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Shaped 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+. They are made from selected clay blends and high-fired. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Silico-Aluminous Refractory Brick
Silico-aluminous refractory bricks are dense ceramic blocks made from blended silica and alumina, fired at high temperatures to achieve low porosity and high mechanical strength. They are designed for use in blast furnace hearths and checker chambers, where they resist slag corrosion and thermal cycling. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Silicon Carbide Refractory Block
Silicon carbide refractory blocks are fired ceramic blocks made from silicon carbide grains, used in high-wear areas of incinerators and boiler linings. They provide exceptional abrasion resistance and thermal conductivity, extending equipment life in harsh conditions. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Silicon Carbide Refractory Bricks
Silicon carbide refractory bricks are fired ceramic constructional goods featuring SiC grains bonded in a fired ceramic matrix, offering excellent thermal conductivity and abrasion resistance for blast furnace applications. Their durability in aggressive environments places them under this tariff item.
6902.90.00Silimanite Refractory Brick
Sillimanite refractory bricks are made from sillimanite minerals, fired to create a dense structure that withstands very high temperatures and resists molten metal penetration. They are primarily used in electric arc furnace roofs and other high-stress metallurgical applications. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
6902.90.00Silimanite Refractory Bricks
Silimanite refractory bricks are fired ceramic constructional goods using high-alumina sillimanite minerals for creep-resistant performance in glass tank regenerator checkers. Their fired structure handles 1600°C+ with minimal deformation, classifying them under this tariff item.
6902.90.00Standard Fireclay Refractory Brick
A standard-sized refractory brick composed of fireclay, designed for boiler and incinerator linings with service temperatures up to 1500°C. It offers good mechanical strength and chemical resistance to slags. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Super-Duty Fireclay Refractory Brick
A premium super-duty fireclay brick with superior creep resistance for crown construction in reheating furnaces serving at 1500°C+. Its low iron formulation enhances slag resistance. This product is classified under tariff item 6902.90.00 as a refractory ceramic constructional good.
6902.90.00Zirconia Refractory Bricks
Zirconia refractory bricks are fired ceramic constructional goods utilizing stabilized zirconium oxide for ultra-high temperature resistance in glass melting tanks and petrochemical reactors. Their low thermal expansion prevents cracking under cyclic heating, qualifying them under this tariff item.