High Alumina Castable Refractory Cement from Canada
A dry-mix refractory cement composed primarily of high-alumina aggregates and calcium aluminate binder, designed for casting into custom shapes that withstand temperatures up to 1800°C. It falls under HTS 3816.00.20.50 as a refractory cement other than those of heading 3801, used in furnaces and kilns for its heat-resistant properties. When mixed with water, it forms a pourable concrete-like material for repairing or lining high-temperature equipment.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Verify chemical composition meets refractory standards (min. 45% alumina) with lab test certificates to avoid misclassification as basic cement
• Include safety data sheets (SDS) for binders and aggregates; ensure packaging labels specify 'refractory use only' to comply with HAZMAT rules