Plastic Fire-Clay Mass from Mexico
Plastic fire-clay mass is wet-mixed fire-clay for ramming into furnace shapes before firing. It is under HTS 2508.30.00.00 as unprocessed fire-clay, suitable for on-site refractory work. Used in steel ladles and incinerators.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Specify water content <25% to remain as clay, not paste/slurry
• Ship in sealed drums to maintain plasticity and avoid drying claims
• Label 'for refractory use only' to prevent end-use misclassification