Refractory ceramic goods; containing, by weight, more than 50% of free carbon, excluding those of siliceous fossil meals or similar earths

HS v2022 Code: 690310

About refractory ceramic goods; containing, by weight, more than 50% of free carbon, excluding those of siliceous fossil meals or similar earths

HS code 690310 covers a specialized category of refractory ceramic goods that contain more than 50% free carbon by weight. These materials are essential for high-temperature industrial applications, such as furnace linings, crucibles, and other equipment used in metallurgy, glass manufacturing, and other energy-intensive industries. As a key component in the production of many essential goods, this industry plays a vital role in supporting the broader economy.

Production process

The production of refractory ceramic goods under HS code 690310 typically involves a multi-step process. Raw materials, including various types of carbon-rich clays and minerals, are carefully selected and blended to achieve the desired composition. The mixture is then formed into the desired shape, often through pressing or extrusion, and undergoes a high-temperature firing process to fuse the materials and impart the necessary refractory properties.

Production inputs

The main inputs required for the production of HS code 690310 refractory ceramic goods include carbon-rich raw materials, such as graphite, petroleum coke, or coal-based additives. Specialized machinery, including kilns and forming equipment, are also essential for the manufacturing process. Additionally, the industry relies on a skilled workforce capable of precisely controlling the production parameters to ensure the quality and performance of the final products.

Production outputs

The refractory ceramic goods produced under HS code 690310 are primarily used in high-temperature industrial applications, such as furnace linings, crucibles, and other equipment used in 720110 Pig iron and spiegeleisen in pigs, blocks or other primary forms, 701000 Glass and glassware, and 841950 Industrial or laboratory furnaces and ovens, including incinerators, non-electric. These specialized materials help to ensure the efficient and reliable operation of these critical industrial processes.

Revisions to 690310

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 690310. The most recent 1 version of this code (690310) is in the HS v2022 system (this version):

This page shows the most recent version of code 690310.

Family tree for refractory ceramic goods; containing, by weight, more than 50% of free carbon, excluding those of siliceous fossil meals or similar earths

    graph LR
    A["<a href='/classifications/hs/v2022/69'>69: Ceramic products</a>"]
A --> B["<a href='/classifications/hs/v2022/6903'>6903: Ceramic goods; (e.g. retorts, crucibles, muffles, nozzles, plugs, supports cupels, tubes, pipes, sheaths, rods and slide gates) excluding those of siliceous fossil meals or of similar siliceous earths</a>"]
B --> C["<a href='/classifications/hs/v2022/690310'>690310: Refractory ceramic goods; containing, by weight, more than 50% of free carbon, excluding those of siliceous fossil meals or similar earths</a>"]

    B --> D["<a href='/classifications/hs/v2022/690320'>690320: Refractory ceramic goods; containing by weight more than 50% of alumina or of a mixture or compound of alumina and of silica, excluding those of siliceous fossil meals or similar earths</a>"]
B --> E["<a href='/classifications/hs/v2022/690390'>690390: Refractory ceramic goods; composition of which n.e.c. in heading no. 6903, other than those of siliceous fossil meals or similar earths</a>"]

    

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class E level6

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