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

HS v2017 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 withstanding high temperatures, corrosive environments, and other demanding conditions. The refractory industry plays a crucial role in supporting various sectors, including steel, cement, glass, and petrochemicals, by providing the necessary heat-resistant materials for furnaces, kilns, and other critical infrastructure.

Production process

The production of refractory bricks, blocks, tiles, and similar goods typically involves a multi-step process. Raw materials, such as clay, silica, and alumina, are carefully selected and blended to achieve the desired properties. The mixture is then formed into the desired shapes using techniques like pressing, extrusion, or casting. After shaping, the products undergo drying and high-temperature firing to enhance their strength, durability, and heat resistance.

Production inputs

The main inputs for the refractory industry under HS code 690290 include various raw materials like clay, silica, alumina, and other mineral additives. Specialized machinery, such as presses, extruders, and kilns, are also essential for the production process. Additionally, energy sources, such as natural gas or electricity, are required to power the high-temperature firing and drying stages.

Production outputs

The primary outputs of the refractory industry under HS code 690290 are bricks, blocks, tiles, and other constructional goods used in a wide range of applications. These products are often consumed by industries such as 7201 Iron and steel, 2523 Cement, 7001 Glass, and 2711 Petroleum, where they are used to build and maintain furnaces, kilns, and other high-temperature equipment.

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 page shows a legacy version of code 690290 ( HS v2017).

Older versions

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/v2017/69'>69: Ceramic products</a>"]
A --> B["<a href='/classifications/hs/v2017/6902'>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/v2017/690290'>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/v2017/690210'>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/v2017/690220'>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