Containing by weight more than 50% of alumina (Al2O3), of silica (SiO2) or of a mixture or compound of these products
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths. > Containing by weight more than 50% of alumina (Al2O3), of silica (SiO2) or of a mixture or compound of these products
Duty Rate (from China)
Products classified under Tariff item 6902.20
70% Alumina Kiln Brick
A kiln brick composed of 70% alumina, designed for pottery and glass kilns, providing superior refractoriness. It is shaped and fired to maintain structural integrity at temperatures exceeding 1700°C, making it a refractory ceramic constructional good.
6902.20.0070% Alumina Refractory Brick
A standard 70% Al2O3 refractory brick fired for use in glass tank regenerator checkers and cement kilns. It is a constructional ceramic good exceeding 50% alumina, meeting the requirements of this tariff item.
6902.20.0070% Alumina Refractory Checker Brick
70% alumina refractory checker bricks are perforated bricks with 70% Al2O3 content, used in regenerator chambers of glass furnaces to promote heat recovery. These high-fired ceramic blocks meet Chapter 69 firing requirements and are classified as refractory constructional goods.
6902.20.0090% Alumina Refractory Brick
A refractory brick composed of 90% alumina for superior thermal shock resistance in high-heat environments. It is a fired ceramic constructional good shaped for boiler and incinerator linings, meeting the requirements of this tariff item.
6902.20.00Alumina Lining Brick for Steel Ladles
High-purity alumina bricks with over 70% alumina, fired for lining steel melting ladles. They resist molten steel erosion at temperatures over 1600°C. Classified under 6902.20.00 as refractory constructional goods for metallurgical furnaces.
6902.20.00Alumina Refractory Anchor Brick
Specialized hooked bricks of high-alumina content for anchoring fiber modules in furnace linings, fired to endure thermal cycling. They are constructional refractories for insulation systems in boilers. Classified under 6902.20.00 as refractory bricks with high alumina content.
6902.20.00Alumina Refractory Checker Brick
Alumina refractory checker bricks are interlocking ceramic blocks made from calcined alumina, designed for use in regenerative heat exchangers within glass furnaces. These bricks are fired at high temperatures to optimize heat recovery and are classified under this tariff item as constructional refractories containing more than 50% alumina by weight.
6902.20.00Alumina Refractory Kiln Shelf
Alumina refractory kiln shelves are flat, fired ceramic components made predominantly of alumina, used to support pottery during high-temperature kiln firing up to 1800°C. They are designed as constructional parts of kiln interiors to resist thermal shock and chemical attack, meeting the criteria for refractory ceramic constructional goods.
6902.20.00Alumina-Silica Refractory Anchor Brick
Alumina-silica refractory anchor bricks are specialty bricks with 60% alumina and 35% silica, designed with notches for securing fiber modules in high-temperature furnaces. These fired ceramic goods are essential for industrial kiln construction and are classified under this tariff item.
6902.20.00Alumina-Silica Refractory Block
Dense refractory blocks with a mixture of over 50% alumina and silica, fired for lining blast furnaces and incinerators. They withstand extreme temperatures and chemical erosion in metallurgical processes. Classified under 6902.20.00 as refractory constructional goods with high alumina-silica content.
6902.20.00Alumina-Silica Refractory Brick for Steel Ladles
Dense refractory brick engineered for lining steel ladles, containing more than 50% combined alumina and silica by weight. Fired at high temperatures to withstand molten metal and slag erosion, it is a ceramic constructional good for industrial furnaces. Classified under tariff item 6902.20.00 as a refractory brick with high alumina-silica content.
6902.20.00Andalusite Refractory Block
Andalusite refractory blocks contain andalusite (Al2SiO5) yielding more than 50% alumina-silica, used for steel ladle impact zones. These high-fired blocks offer thermal shock resistance in construction applications and are classified under this tariff item as refractory ceramic constructional goods.
6902.20.00Bauxite Alumina Refractory Brick
Bauxite alumina refractory bricks are made from calcined bauxite aggregate, yielding more than 55% alumina by weight, and are fired for use in cement kiln nose rings and cooler zones. These bricks offer high mechanical strength and are classified as constructional refractory goods under this tariff item.
6902.20.00Blast Furnace Alumina Brick
A heavy-duty alumina brick containing more than 50% Al2O3, used for blast furnace hot blast stove checker chambers. Its refractory properties resist slag erosion and high thermal loads, making it a constructional refractory ceramic good.
6902.20.00Checker Refractory Brick
Honeycomb-structured bricks with over 50% alumina-silica composition, fired for heat recuperators in glass furnaces. The checker design enables efficient heat recovery through alternating passageways. Classified under 6902.20.00 as refractory constructional goods with high alumina-silica content.
6902.20.00Chrome-Alumina Refractory Brick
A direct-bonded chrome-alumina brick with more than 50% Al2O3 and chromic oxide, used for glass furnace regenerator checkers. It offers exceptional corrosion resistance to glass melts, qualifying as a refractory ceramic constructional good.
6902.20.00Fused Alumina Refractory Block
Fused alumina refractory blocks are dense blocks made from fused alumina with over 90% Al2O3 content, fired and shaped for use in blast furnace hearths. They provide superior abrasion resistance and are used in heavy industrial construction for high-wear zones, qualifying as refractory ceramic constructional goods.
6902.20.00Glass Furnace Silica Brick
Fused silica bricks with over 95% silica content, fired for glass tank furnace crowns and walls. They offer excellent creep resistance at temperatures above 1500°C. Classified under 6902.20.00 as refractory bricks with high silica content.
6902.20.00Glass Tank Alumina Furnace Brick
Alumina-rich bricks with more than 50% Al2O3, used for glass melting tank furnaces, offering resistance to molten glass corrosion. These refractory constructional ceramics are fired after shaping, qualifying under this tariff item.
6902.20.00High-Alumina Burner Block
High-alumina burner blocks are precision-shaped ceramic blocks with over 60% Al2O3 content, fired for use in gas or oil burner installations in reheating furnaces. They resist flame impingement and are classified as refractory constructional goods under this tariff item.
6902.20.00High-Alumina Firebrick
A high-alumina firebrick containing over 50% alumina (Al2O3), fired after shaping for high-temperature resistance. It is used in furnaces and kilns for lining to withstand extreme heat, making it a constructional refractory good.
6902.20.00High-Alumina Refractory Firebrick
A high-alumina refractory firebrick containing over 50% alumina (Al2O3), fired after shaping for high-temperature resistance. It is used in furnaces and kilns for lining to withstand extreme heat without deforming, making it a constructional refractory good.
6902.20.00High-Duty Alumina Refractory Brick for Incinerators
High-duty refractory brick with over 60% alumina content, fired for waste incinerator walls. It resists chemical attack and extreme heat, meeting Chapter 69 firing standards. Classified under 6902.20.00 as a refractory constructional good with high alumina-silica content.
6902.20.00High-Purity Alumina Refractory Tile
Fired ceramic tiles with over 70% alumina content, used for lining rotary kilns in cement production. They provide abrasion resistance at temperatures over 1600°C. Classified under 6902.20.00 as refractory tiles with high alumina content.
6902.20.00Insulating Alumina Refractory Brick
A lightweight insulating brick with more than 50% alumina and a porous structure, used for furnace backup insulation. It is a fired ceramic with low thermal conductivity at high temperatures, qualifying as a refractory constructional good.
6902.20.00Kiln Car Alumina Brick
Heavy-duty alumina bricks with more than 50% Al2O3, used for kiln car tops and supports in ceramic firing kilns. They provide structural stability at high temperatures post-firing, qualifying as refractory constructional goods.
6902.20.00Ladle Refractory Brick
High-alumina bricks fired for steel ladle working linings, containing over 55% alumina for molten steel containment. They are designed for multiple heat cycles with erosion resistance. Classified under 6902.20.00 as refractory bricks with high alumina content.
6902.20.00Magnesia-Alumina Refractory Brick
Refractory bricks blending over 50% alumina with magnesia, fired for basic oxygen furnace linings. They offer superior slag resistance in steel production. Classified under 6902.20.00 as refractory bricks with high alumina content, despite the magnesia addition.
6902.20.00Phosphate-Bonded Alumina Brick
Refractory bricks using phosphate binders with more than 50% alumina for improved strength in backup linings. They meet Chapter 69 firing requirements using inorganic nonmetallic materials, qualifying as constructional refractory goods.
6902.20.00Phosphate-Bonded Alumina Refractory Brick
Phosphate-bonded alumina refractory brick with over 50% alumina, fired for abrasion resistance in rotary kilns. The phosphate bond enhances strength and thermal stability, making it suitable for high-wear industrial applications. Classified under 6902.20.00 as a refractory brick with high alumina content.
6902.20.00Rotary Kiln Alumina Brick
Phosphate-bonded alumina bricks with over 70% alumina, fired for cement rotary kiln burning zones. They resist alkali attack and coating formation. Classified under 6902.20.00 as refractory bricks with high alumina content.
6902.20.00Rotary Kiln Alumina Lining Brick
Specialized bricks with high alumina content for lining rotary cement kilns, resisting abrasion and alkali attack. They are fired inorganic nonmetallic ceramics per the chapter definition, qualifying as constructional refractory goods.
6902.20.00Rotary Kiln Alumina-Silica Brick
A refractory brick blending alumina and silica with more than 50% total content, used for cement rotary kiln burning zones. It is fired to achieve high density and abrasion resistance, making it a constructional refractory ceramic good.
6902.20.00Silica-Alumina Anchor Brick
Specialty anchor bricks with over 50% combined silica and alumina, fired for securing fiber modules in industrial furnaces. They are designed for high-temperature suspension systems. Classified under 6902.20.00 as refractory constructional goods with high alumina-silica content.
6902.20.00Silica-Alumina Backup Refractory Brick
Backup layer refractory brick with balanced silica and alumina content exceeding 50% combined, fired for furnace hot repair and lining support. It provides thermal insulation and structural integrity in industrial furnaces. Classified under 6902.20.00 as a refractory brick with high alumina-silica content.
6902.20.00Silica-Alumina Refractory Brick
A refractory brick with more than 50% combined silica (SiO2) and alumina, engineered for blast furnace linings. It is a fired ceramic construction that withstands thermal shock and corrosion from molten materials, qualifying under this tariff item.
6902.20.00Slide Gate Refractory Block
Precision-fired blocks with high alumina content exceeding 60%, for molten steel slide gate valves in continuous casting. They resist thermal shock and erosion from liquid metal. Classified under 6902.20.00 as refractory constructional goods with high alumina content.
6902.20.00Steel Ladle Alumina Brick
A high-purity alumina brick with more than 60% Al2O3, used for steel ladle impact pads and purge plugs. It is fired to resist molten steel and slag penetration, making it a constructional refractory ceramic good.
6902.20.00Synthetic Alumina Refractory Slab
Synthetic alumina refractory slabs are large slabs made from synthetic alumina sintered at high temperatures for use in furnace roofs and walls, with over 80% Al2O3 purity. These slab-form constructional goods are designed for refractory applications and fall under this tariff item.
6902.20.00Tabular Alumina Refractory Tile
Tabular alumina refractory tiles are made from tabular alumina grains, fired for use in rotary kilns and incinerators, providing excellent spalling resistance. These thin constructional elements are used for refractory linings and are classified under this tariff item as refractory ceramic constructional goods.