Glass Furnace Silica Brick
Fused silica bricks (>95% SiO2) fired for glass tank furnace crowns and walls. Excellent creep resistance at 1500°C+. HTS 6902.20.50 for high-silica refractory constructional bricks.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing natural diatomite/kieselguhr
Fossil siliceous materials have dedicated subheading.
If glass tube/cane precursors
Glass articles themselves classify under Chapter 70.
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Import Tips & Compliance
• Include silica phase transformation curve data
• Specify exact SiO2 crystal content percentage
• Handle carefully to prevent spalling during shipping
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