Harmonized System Code Classification

3816001000
Classification: Refractory cement, mortar, concrete, and similar compositions, including pyrite crushed mixtures, excluding products of Chapter 3801.
Explanation: This HS code refers to refractory cement, mortar, concrete, and similar compositions, including pyrite crushed mixtures, but excludes products covered under Chapter 3801. Specifically, it includes refractory cement, mortar, and concrete materials, as well as pyrite crushed mixtures.

Examples of products under this HS code: - Refractory cement for high-temperature applications - Refractory mortar used in kilns and furnaces - Refractory concrete for industrial construction - Pyrite crushed mixtures for specific industrial uses - Heat-resistant cement used in metallurgical processes