Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths.
Other ceramic articles. > Of porcelain or china > Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths. > Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths.
Duty Rate (from China)
Products classified under Tariff item 6901.00
Diatomaceous Earth Firebrick
A high-temperature resistant brick made from diatomaceous earth (kieselguhr), a siliceous fossil meal, shaped and fired for use in industrial furnaces and kilns. This product qualifies under tariff item 6901.00.00 as a ceramic good of siliceous fossil meals, which are explicitly included in the heading. The firing process meets the chapter's requirement for ceramic products.
6901.00.00Diatomaceous Earth Kiln Shelf
A fired ceramic shelf made from diatomite for supporting pottery in kilns, valued for lightweight insulation. This product falls under tariff item 6901.00.00 as an 'other ceramic good' of siliceous fossil meals, since it is shaped and fired from diatomaceous earth. The heading explicitly includes such ceramic goods beyond bricks, blocks, and tiles.
6901.00.00Diatomite Pool Filter Block
A ceramic block composed of diatomaceous earth for use in swimming pool filtration systems, providing high porosity after firing. This product is classified under tariff item 6901.00.00 as an 'other ceramic good' of siliceous fossil meals, as it is shaped and fired from diatomite. The heading covers such goods regardless of their end-use application.
6901.00.00Diatomite Thermal Insulation Block
A high-porosity thermal insulation block from diatomaceous earth for ovens and high-heat enclosures. This product is specifically covered by tariff item 6901.00.00, which includes blocks of siliceous fossil meals. The block is shaped and fired, meeting the ceramic product requirements of Chapter 69.
6901.00.00Kieselguhr Catalyst Support Brick
A ceramic brick from kieselguhr used as inert support for chemical catalysts in reactors. This product falls under tariff item 6901.00.00 as a ceramic good of siliceous fossil meals, specifically kieselguhr. The brick is shaped and fired, meeting the requirements for ceramic products in Chapter 69.
6901.00.00Kieselguhr Insulating Brick
An insulating ceramic brick produced from kieselguhr (diatomite), offering excellent thermal resistance for boiler linings and high-heat applications. This product is classified under tariff item 6901.00.00 due to its composition from siliceous fossil meals. The brick is shaped and fired, meeting the ceramic product definition in Chapter 69.
6901.00.00Kieselguhr Roofing Tile
A lightweight roofing tile manufactured from kieselguhr for thermal insulation in construction. Tariff item 6901.00.00 includes tiles of siliceous fossil meals, distinct from common clay tiles. The tile is shaped and fired, meeting the ceramic product requirements of Chapter 69.
6901.00.00Siliceous Earth Acoustic Tile
An acoustic absorption tile crafted from fired siliceous fossil earths like diatomite for soundproofing walls. This product is covered by tariff item 6901.00.00 as a tile of similar siliceous earths. The tile is shaped and fired, meeting the ceramic product definition in Chapter 69.
6901.00.00Tripolite Absorbent Brick
An absorbent ceramic brick from tripolite used in industrial spill control and chemical absorption. This product is classified in tariff item 6901.00.00 for ceramic goods of similar siliceous earths fired after shaping. The brick is made from tripolite, a siliceous fossil earth explicitly included in the heading.
6901.00.00Tripolite Ceramic Block
A heavy-duty ceramic block made from tripolite, a siliceous fossil earth similar to diatomite, used in furnace construction. Tariff item 6901.00.00 covers such goods explicitly, including 'similar siliceous earths' that are shaped and fired. The block meets the ceramic product definition in Chapter 69.