Containing by weight more than 50% of free carbon
Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths. > Containing by weight more than 50% of free carbon > Containing by weight more than 50% of free carbon > Containing by weight more than 50% of free carbon
Duty Rate (from China)
Products classified under Tariff item 6903.10.00
Carbon Crucible for Aluminum Die Casting
A large graphite crucible engineered for melting aluminum alloys in die casting operations. It contains more than 50% free carbon by weight and is fired after shaping, qualifying as a refractory ceramic good under this tariff item. Designed to withstand temperatures up to 1400°C in non-ferrous foundry environments.
Carbon Graphite Nozzle for Continuous Casting
A refractory graphite nozzle used in steel continuous casting to regulate molten metal flow. Composed of more than 50% free carbon by weight and fired at high temperatures, it meets the definition of a refractory ceramic good. Essential for controlling metal flow in industrial steel production.
Graphite Crucible for Metal Melting
A high-density graphite crucible designed for melting precious metals such as gold and silver in foundry operations. It contains over 50% free carbon by weight and is fired after shaping from inorganic non-metallic materials including graphite. Suitable for high-temperature metal processing applications.
Graphite Immersion Heater Tube
A protective graphite sheath tube for immersion heaters used in molten metal baths. Its high free carbon content, exceeding 50% by weight, provides corrosion resistance in aggressive environments. Fired after shaping, it qualifies as a refractory ceramic good under this tariff item.
Graphite Slide Gate Refractory for Steel Ladles
Slide gate plates made from high-carbon graphite for controlling molten steel flow in ladles. They exceed 50% free carbon content and are fired ceramic refractory goods designed for extreme temperatures. Critical components in steelmaking operations for precise flow control.
Graphite Stopper Rod for Molten Metal Pouring
A refractory graphite stopper rod used to control molten steel pouring from ladles. With high free carbon content exceeding 50%, it offers thermal shock resistance after the ceramic firing process. Standard equipment in foundries for precise metal flow regulation.
High-Carbon Graphite Retort for Laboratory Use
A sealed graphite retort vessel for high-temperature chemical reactions and distillation processes. It contains over 50% free carbon and is fired after shaping, meeting Chapter 69 requirements. Used in analytical and research laboratories for demanding thermal applications.
High-Purity Graphite Cupel for Fire Assay
Specialized graphite cupels used in fire assay for precious metal analysis. They contain over 50% free carbon and are fired after shaping for analytical laboratory use. These cupels absorb the lead button during precious metal parting, ensuring accurate results.