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)
Subheadings
Products classified under Tariff item 6902.20.00
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.
70% 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.
90% 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.
Blast 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.
Chrome-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.
Glass 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.
High-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.
High-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.
Insulating 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.
Kiln 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.
Phosphate-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.
Rotary 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.
Rotary 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.
Silica-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.
Steel 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.