Alumina Refractory Anchor Brick
Specialized hooked bricks of high-alumina content for anchoring fiber modules in furnace linings, fired to endure thermal cycling. Constructional refractory for insulation systems in boilers. HTS 6902.20.50.10 for pure alumina variants.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If high-silica alumina mix >50% total
Mixture compositions have priority subheading if silica dominant.
If steel-ceramic composite refractories
Metal-ceramic composites classified by metal component.
If decorated ceramic articles
Chapter exclusions send decorative items to later headings.
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Import Tips & Compliance
• Include dimensional drawings showing refractory shapes to distinguish from standard bricks
• Verify no metallic components, as those may trigger Chapter 82 classification
• Bulk shipments require average composition sampling per US import practices
Related Products under HTS 6902.20.50.10
High-Alumina Refractory Firebrick
A refractory brick composed of over 50% alumina (Al2O3), fired after shaping to withstand extreme temperatures above 1700°C. Used primarily in industrial furnaces and kilns for lining to protect against molten metal and slag corrosion. Falls under HTS 6902.20.50.10 as a refractory ceramic constructional good containing predominantly alumina.
Alumina Refractory Kiln Shelf
Flat, fired ceramic shelf made predominantly of alumina for supporting pottery in high-temperature kilns up to 1800°C. Designed as a constructional component in kiln interiors to resist thermal shock and chemical attack. Classified under HTS 6902.20.50.10 due to >50% alumina content and refractory properties post-firing.
Alumina Lining Brick for Steel Ladles
High-purity alumina bricks (>70% Al2O3) fired for use in lining steel melting ladles, resisting molten steel erosion at 1600°C+. Essential constructional refractory for metallurgical furnaces. HTS 6902.20.50.10 applies for alumina-dominant refractory bricks/blocks.
Fused Alumina Refractory Block
Dense blocks of fused alumina (Al2O3 >90%) fired and shaped for blast furnace hearths, offering superior abrasion resistance. Used in heavy industrial construction for high-wear zones. Meets HTS 6902.20.50.10 as 'other' alumina refractory constructional goods.
Tabular Alumina Refractory Tile
Tiles made from tabular alumina grains, fired for use in rotary kilns and incinerators, providing excellent spalling resistance. Thin constructional elements (<3.2cm per US note) for refractory linings. Fits HTS 6902.20.50.10 as alumina refractory tiles.
High-Alumina Burner Block
Precision-shaped burner port blocks with >60% Al2O3, fired for gas/oil burner installations in reheating furnaces. Refractory constructional goods resisting flame impingement. HTS 6902.20.50.10 for alumina burner refractories.