6810 - Articles of cement, of concrete or of artificial stone, whether or not reinforced:

HTS Code 6810 encompasses a broad range of manufactured articles primarily composed of cement, concrete, or artificial stone. This classification is designed to capture finished products and semi-finished goods where these composite materials are the defining component. Examples include concrete blocks, pre-cast concrete elements for construction, artificial stone tiles, and various molded cement articles, whether or not they are internally reinforced with materials like steel or fiberglass. The key criterion for inclusion is the primary composition of cementitious material.

This category is distinct from other materials classified in Section XIII, such as those primarily made of natural stone (Chapter 6801-6810, where applicable), plaster (Chapter 6809), or asbestos (Chapter 6812). While these materials might sometimes be used in conjunction with cement or concrete, the dominant material content dictates classification. Furthermore, items primarily considered ceramic products (Chapter 69) or glass and glassware (Chapter 70) will fall under their respective chapters, even if they share some functional similarities with cementitious articles.

Within HTS Code 6810, further subclassification is typically based on the form and intended use of the articles. The primary divisions are generally between "Tiles, flagstones, bricks and similar articles," which refers to modular components designed for surface covering or construction, and "Other articles," which captures a wider array of manufactured goods made from cement, concrete, or artificial stone not fitting the former description. This distinction helps differentiate standardized building materials from more specialized or miscellaneous cementitious products.