Clay Refractory Fire Bricks from Mexico
High-alumina clay fire bricks designed for lining industrial furnaces and kilns, fired after shaping to withstand temperatures exceeding 1500°C. Classified under HTS 6902.90.50.10 as refractory bricks made primarily from clay, excluding siliceous fossil meals. These constructional goods provide thermal insulation and chemical resistance in high-heat environments.
Duty Rate — Mexico → United States
Rate breakdown
Import Tips
• Verify firing temperature exceeds 800°C with manufacturer certificates to confirm Chapter 69 eligibility; unfired clay products fall outside this chapter
• Provide detailed composition reports showing clay as primary ingredient (>50%) to avoid misclassification under siliceous earth headings
• Include end-use documentation proving refractory application to distinguish from building materials in Chapter 68