Kaolin-Based Plastic Refractory Clay
Plastic refractory clay made from kaolin with plasticizers for forming dense linings in boilers and incinerators. It qualifies under HTS 3816.00.20.10 as a clay refractory mortar/concrete composition for high-heat resistance.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If based on aluminous cement
Aluminous cement-based refractories precede clay in 3816 hierarchy.
If raw kaolin clay
Kaolin and other clays without refractory processing are Chapter 25 raw materials.
If manufactured into clay blocks or tiles
Pressed or molded refractory clay products become Chapter 69 articles.
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Import Tips & Compliance
• Conduct XRF analysis to document kaolin clay as primary constituent over 40%
• Label as 'plastic refractory' with working temperature range to distinguish from pottery clay
Related Products under HTS 3816.00.20.10
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