Alumina-Silica Refractory Anchor Brick
Specialty anchor bricks with 60% alumina and 35% silica, designed with notches for securing fiber modules in high-temperature furnaces. Fired ceramic goods essential for industrial kiln construction. Fits HTS 6902.20.50.20 due to predominant alumina-silica content and refractory block form.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing ≤50% alumina or silica
Lower alumina-silica content goods classify under 'other' refractory constructions in 6902.90.
If non-ceramic fiber cement-based refractories
Chapter 68 covers non-ceramic construction materials, excluding fired ceramics of Chapter 69.
If repurposed as unglazed porcelain lab ware
End-use as laboratory equipment shifts to porcelain provisions, not refractories.
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Import Tips & Compliance
• Provide detailed drawings showing anchor shapes to differentiate from standard bricks under statistical reporting
• Label shipments clearly as 'refractory constructional goods' to prevent confusion with Chapter 69 consumer ceramics
Related Products under HTS 6902.20.50.20
Silica-Alumina Skid Rail Tile
Refractory tiles composed of 55% silica and 40% alumina for skid rails in reheating furnaces, providing wear resistance. Shaped and fired for high-temperature industrial applications. Classified in 6902.20.50.20 as 'other' alumina-silica refractory tiles for construction.
High-Silica Alumina Kiln Shelf
Kiln furniture shelves with 65% silica and 30% alumina for supporting pottery during firing. Refractory ceramic slabs shaped and fired per Chapter 69 standards. HTS 6902.20.50.20 for other alumina-silica constructional goods.
High-Alumina Refractory Firebrick
A dense refractory brick containing over 70% alumina (Al2O3) and silica (SiO2), fired after shaping to withstand temperatures exceeding 1700°C. Used primarily in furnace linings and kilns for its high thermal resistance and mechanical strength. Classifies under HTS 6902.20.50.20 as a refractory ceramic constructional good with more than 50% alumina-silica content, not of siliceous fossil meals.
70% Alumina Refractory Checker Brick
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Mullite Refractory Brick
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Andalusite Refractory Block
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