Andalusite-Based Refractory Gun Mix from Mexico
Gunning refractory with andalusite for aluminum reduction cell repairs. HTS 3816.00.20.50 classification for thermal shock resistance to 1500°C. Needle-like crystals enhance mullite formation.
Duty Rate — Mexico → United States
13%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Andalusite crystal orientation certs for performance claims
• Avoid kyanite confusion via mineral analysis