Magnesia Ramming Refractory Mortar from Japan
A granular refractory mortar made from dead-burned magnesia and phosphate binders for repairing steel ladle linings. It qualifies for HTS 3816.00.20.50 as an 'other' refractory composition, offering superior slag resistance in steelmaking at temperatures exceeding 1600°C. Applied by pneumatic ramming for quick hot repairs.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include melting point (>1600°C) and slag resistance test reports to confirm refractory status
• Phosphate binders may trigger chemical import regs; prepare EPA notifications if applicable
• Avoid pitfall of bulk misclassification by specifying 'ramming mortar for metallurgical furnaces' on invoices