Engineering Hollow Ceramic Bricks Class SX
Class SX engineering hollow ceramic bricks for severe weather exposure, high-fired clay construction units. Under HTS 6904.10.00.40 as other hollow bricks for demanding structural applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If porcelain or high-end ceramic lab construction ware
Low-absorption porcelain bodies for technical use classify in heading 6909.
If refractory with >50% alumina or silica
High-spec refractory compositions exclude from building bricks.
If prefabricated cement-sand structural units
Cement-intensive blocks class as Chapter 68 articles, not pure ceramics.
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Import Tips & Compliance
• Include weathering resistance test results (ASTM C902) for engineering grade verification
• Ensure no surface treatments pushing into glazed tile classifications
• Document firing uniformity to meet Chapter 69 inorganic nonmetallic materials definition
Related Products under HTS 6904.10.00.40
Hollow Ceramic Building Bricks 8x4x16 Inch
These hollow ceramic building bricks, measuring 8x4x16 inches, are fired after shaping from clay mixtures and used in residential and commercial wall construction. They fall under HTS 6904.10.00.40 as hollow building bricks other than refractory types, providing lightweight insulation and structural support.
Lightweight Hollow Clay Bricks for Partition Walls
Lightweight hollow clay bricks designed for interior partition walls, fired from shaped clay at high temperatures. Classified under HTS 6904.10.00.40 as other hollow building bricks, offering thermal insulation and reduced weight for non-load-bearing applications.
Perforated Hollow Ceramic Bricks 12x6x24 Inch
Perforated hollow ceramic bricks sized 12x6x24 inches, made by firing shaped clay bodies for enhanced ventilation in masonry walls. HTS 6904.10.00.40 covers these as other hollow building bricks for structural and insulating purposes.
Insulated Hollow Clay Blocks for Load-Bearing Walls
Hollow clay blocks with internal insulation voids for load-bearing exterior walls, produced by high-temperature firing after shaping. Falls under HTS 6904.10.00.40 as other hollow building bricks essential for energy-efficient construction.
Standard Hollow Ceramic Bricks Type FBX
Type FBX standard hollow ceramic bricks conforming to ASTM C652, fired from clay for general masonry applications. Classified in HTS 6904.10.00.40 as other hollow building bricks valued for durability and fire resistance.
Multi-Void Hollow Clay Bricks 4-Core Design
Four-core multi-void hollow clay bricks providing superior insulation, fired after clay shaping for cavity wall construction. HTS 6904.10.00.40 applies to these other hollow building bricks meeting non-refractory criteria.