Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; other than those of siliceous fossil meals or similar siliceous earths

HS v2022 Code: 6902

About refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; other than those of siliceous fossil meals or similar siliceous earths

HS code 6902 covers a range of refractory ceramic materials used in the construction and industrial sectors. These specialized products are designed to withstand high temperatures, corrosive environments, and other demanding conditions. They play a crucial role in the manufacturing of furnaces, kilns, and other industrial equipment, as well as in the construction of buildings and infrastructure that require heat-resistant materials. The global refractory industry is closely tied to the performance of sectors such as steel, cement, glass, and petrochemicals, making it an important component of the broader economy.

Production process

Refractory ceramic goods under HS code 6902 are typically produced through a combination of mining, milling, mixing, and firing processes. Raw materials such as clay, bauxite, and silica are extracted, crushed, and blended to achieve the desired chemical and physical properties. The mixture is then shaped into bricks, blocks, or tiles using techniques like pressing, extrusion, or casting. Finally, the formed products are fired at high temperatures, often exceeding 1,500°C, to achieve the necessary strength, density, and heat resistance.

Production inputs

The main inputs for the production of HS code 6902 refractory goods include various types of clay, such as fireclay, bauxite, and silica. These raw materials are sourced from mining operations and must meet strict quality standards. Additionally, the industry relies on specialized machinery for crushing, mixing, and shaping the refractory materials, as well as high-temperature kilns or furnaces for the firing process. Energy, in the form of electricity or fuel, is another critical input for the production of these heat-resistant ceramic goods.

Production outputs

The primary outputs of the HS code 6902 industry are refractory bricks, blocks, tiles, and other constructional goods used in a wide range of industrial and construction applications. These products are often consumed by industries such as 6901 Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, 6903 Other refractory ceramic goods, and 7308 (Structures and parts of structures; e.g. bridges and bridge-sections, lock-gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns), of iron or steel), among others. The refractory industry plays a crucial role in supporting the operations of these downstream sectors.

Family tree for refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; other than those of siliceous fossil meals or similar siliceous earths

    graph LR
    A["<a href='/classifications/hs/v2022/69'>69: Ceramic products</a>"]
A --> B["<a href='/classifications/hs/v2022/6902'>6902: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; other than those of siliceous fossil meals or similar siliceous earths</a>"]

    A --> C["<a href='/classifications/hs/v2022/6901'>6901: Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (e.g. kieselguhr, tripolite or diatomite) or of similar siliceous earths</a>"]
A --> D["<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>"]
A --> E["<a href='/classifications/hs/v2022/6904'>6904: Ceramic building bricks, floor blocks, support or filler tiles and the like</a>"]
A --> F["<a href='/classifications/hs/v2022/6905'>6905: Roofing tiles, chimney-pots, cowls, chimney liners, architectural ornaments and other ceramic constructional goods</a>"]
A --> G["<a href='/classifications/hs/v2022/6906'>6906: Ceramic pipes, conduits, guttering and pipe fittings</a>"]
A --> H["<a href='/classifications/hs/v2022/6907'>6907: Ceramic flags and paving, hearth or wall tiles; ceramic mosaic cubes and the like, whether or not on a backing; finishing ceramics</a>"]
A --> I["<a href='/classifications/hs/v2022/6909'>6909: Ceramic ware for laboratory, chemical, other technical uses; ceramic troughs, tubs, similar receptacles used in agriculture; ceramic pots, jars and similar used in the conveyance or packing of goods</a>"]
A --> J["<a href='/classifications/hs/v2022/6910'>6910: Ceramic sinks, wash basins, wash basin pedestals, baths, bidets, water closet pans, flushing cisterns, urinals and similar sanitary fixtures</a>"]
A --> K["<a href='/classifications/hs/v2022/6911'>6911: Tableware, kitchenware, other household articles and toilet articles; of porcelain or china</a>"]
A --> L["<a href='/classifications/hs/v2022/6912'>6912: Ceramic tableware, kitchenware, other household articles and toilet articles; other than of porcelain or china</a>"]
A --> M["<a href='/classifications/hs/v2022/6913'>6913: Statuettes and other ornamental ceramic articles</a>"]
A --> N["<a href='/classifications/hs/v2022/6914'>6914: Ceramic articles; n.e.c. in chapter 69</a>"]

    B --> O["<a href='/classifications/hs/v2022/690210'>690210: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight, singly or together, more than 50% of the elements Mg, Ca or Cr, expressed as MgO, CaO or Cr2o3</a>"]
B --> P["<a href='/classifications/hs/v2022/690220'>690220: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight more than 50% of alumina (Al2o3), of silica (SiO2) or of a mixture or compound of these</a>"]
B --> Q["<a href='/classifications/hs/v2022/690290'>690290: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; n.e.c. in item no. 6902.1 or 6902.2</a>"]


    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level4
class D level4
class E level4
class F level4
class G level4
class H level4
class I level4
class J level4
class K level4
class L level4
class M level4
class N level4
class O level6
class P level6
class Q level6

  class B highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class B highlight