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Product Classification Guide

HS Code for Silica bricks

6902.20 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
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Silica bricks are classified under HS code 6902.20. This code is situated within Chapter 69, which encompasses ceramic products. Heading 6902 specifically covers refractory bricks, blocks, tiles, and similar refractory ceramic constructional goods. To qualify for subheading 6902.20, the product must contain more than 50% by weight of alumina (Al2O3), silica (SiO2), or a mixture/compound of these two substances. Silica bricks are essential in high-temperature industrial applications, such as glass melting furnaces and coke ovens, due to their high melting point and structural stability. The classification depends on the refractory nature of the goods, meaning they must be able to withstand temperatures exceeding 1,500 degrees Celsius without melting or losing their shape in the specific industrial environment for which they are designed.

Products Included

  • Refractory silica bricks
  • Silica-alumina refractory blocks
  • High-silica furnace lining tiles
  • Acid-resistant refractory bricks
  • Silica checker bricks for heat regenerators

Common Misclassification

A frequent misclassification occurs with HS code 6901.00, which covers bricks and blocks made of siliceous fossil meals (like kieselguhr or diatomite). While both contain silica, 6901 is specific to fossil-based materials that are lightweight and insulating, whereas 6902.20 is for heavy refractory materials. Another common error is using 6904.10, which is for standard ceramic building bricks. Standard building bricks do not possess the refractory properties required for Chapter 6902. Furthermore, non-ceramic silica blocks might be confused with 6815.99, but if the product is fired ceramic, 6902.20 is the correct designation.

FAQ

What is the HS code for silica bricks?

Silica bricks used for refractory purposes are classified under HS code 6902.20.

What is the difference between HS 6901 and 6902.20?

HS 6901 is for goods made from siliceous fossil meals (insulating), while 6902.20 is for refractory goods containing over 50% silica or alumina designed for high-heat structural use.

Frequently Asked Questions

What is the HS code for Silica bricks?

The HS code for Silica bricks is 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).

How do I classify Silica bricks for customs?

Silica bricks is classified under HS code 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. This is a 6-digit subheading level code.

Is the HS code for Silica bricks the same in all countries?

The base HS code 690220 for Silica bricks is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.