Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; n.e.c. in item no. 6902.1 or 6902.2

HS v2022 Code: 690290

About refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; n.e.c. in item no. 6902.1 or 6902.2

HS code 690290 covers a wide range of refractory ceramic materials used in construction and industrial applications. These specialized products are essential for high-temperature environments, providing heat resistance, durability, and thermal insulation. The refractory industry plays a crucial role in supporting various sectors, including steel production, glass manufacturing, and power generation, contributing to the overall economic development.

Production process

The production of refractory bricks, blocks, tiles, and similar goods involves a multi-step process. It typically begins with the selection and preparation of raw materials, such as clay, silica, and alumina. These materials are then crushed, milled, and blended to achieve the desired composition. The mixture is then shaped using techniques like pressing, extrusion, or casting, depending on the specific product. Finally, the shaped products undergo high-temperature firing or sintering to enhance their strength, density, and heat resistance.

Production inputs

The main inputs required for the production of HS code 690290 products include various types of clay, such as fireclay, bauxite, and kaolin, as well as other refractory materials like silica, alumina, and magnesia. Additionally, specialized machinery, such as crushers, mills, presses, and kilns, are essential for the manufacturing process. Energy sources, such as natural gas or electricity, are also crucial for the high-temperature firing and sintering stages.

Production outputs

The primary outputs of HS code 690290 are refractory bricks, blocks, tiles, and similar ceramic constructional goods. These products are widely used in the construction of furnaces, kilns, and other high-temperature industrial equipment. They are also consumed by industries such as 720110 Iron and steel, 700100 Glass and glassware, and 851410 Furnaces and ovens, where their heat-resistant properties are essential for efficient and reliable operations.

Revisions to 690290

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 690290. The most recent 1 version of this code (690290) is in the HS v2022 system (this version):

This page shows the most recent version of code 690290.

Family tree for refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; n.e.c. in item no. 6902.1 or 6902.2

    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>"]
B --> C["<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>"]

    B --> D["<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 --> E["<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>"]

    

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    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 level6
class D level6
class E level6

  class C 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 C highlight