Alumina-Silica Refractory Brick for Steel Ladles
Dense refractory brick with >50% combined Al2O3 and SiO2, engineered for lining steel ladles in metallurgy. Falls under HTS 6902.20.10.20 as 'other' bricks for high-heat industrial construction, fired to withstand molten metal exposure. Excludes basic siliceous fossil meal products per hierarchy.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If in shapes other than bricks, blocks, or tiles
Non-brick forms like special refractory shapes move to 6902.20.20, changing from brick-specific subheading.
If repurposed for laboratory crucibles rather than construction
End-use as lab equipment shifts to porcelain labware in 6909, not industrial refractory construction goods.
If imported as unfired granular refractory mix
Unfired prepared binders or mixes are chemical preparations under Chapter 38, not fired goods of Chapter 69.
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Import Tips & Compliance
• Submit lab analysis reports confirming >50% alumina-silica weight to avoid reclassification to lower-duty basic bricks
• Declare intended end-use as refractory construction to differentiate from Chapter 68 millstones or Chapter 69 labware
• Watch for bulk shipments misdeclared as parts; ensure pieces qualify as 'bricks' with standard rectangular dimensions
Related Products under HTS 6902.20.10.20
High-Alumina Refractory Firebrick
A refractory brick containing over 50% alumina (Al2O3), fired after shaping for high-temperature resistance in furnaces and kilns. Classified under HTS 6902.20.10.20 as 'other' bricks made from alumina-silica mixtures, designed for constructional use in industrial heating equipment. Meets Chapter 69 requirements for fired ceramic goods excluding those in headings 6901-6903.
70% Alumina Refractory Brick
Standard 70% Al2O3 refractory brick fired for use in glass tank regenerator checkers and cement kilns. HTS 6902.20.10.20 covers 'other' bricks exceeding 50% alumina or silica, as constructional ceramic goods per Chapter 69 notes. High thermal shock resistance defines its refractory application.
Silica-Alumina Backup Refractory Brick
Backup layer refractory brick with balanced >50% SiO2-Al2O3 for furnace hot repair and lining support. Classified in HTS 6902.20.10.20 as 'other' non-fossil meal bricks, fired ceramic constructional goods for industrial refractories. Provides insulation behind wear-resistant hot face bricks.
High-Duty Alumina Refractory Brick for Incinerators
High-duty brick with >60% Al2O3 for waste incinerator walls, fired to Chapter 69 standards. HTS 6902.20.10.20 'other' bricks exclude siliceous earths, focusing on alumina-silica for extreme heat construction. Resists chemical erosion from combustion byproducts.
Phosphate-Bonded Alumina Refractory Brick
Phosphate-bonded brick exceeding 50% Al2O3, fired for abrasion resistance in rotary kilns. HTS 6902.20.10.20 as 'other' constructional refractory bricks per Chapter notes on inorganic nonmetallic firing. Bonds enhance strength without compromising refractoriness.