6811 - Articles of asbestos-cement, of cellulose fiber-cement or the like:

HTS code 6811 encompasses a broad range of articles manufactured from asbestos-cement, cellulose fiber-cement, or similar composite materials. These products are typically characterized by their rigidity, durability, and resistance to fire and corrosion, making them suitable for various construction and industrial applications. Examples include roofing materials, siding panels, partitions, pipes, and decorative architectural elements. The key defining factor for this classification is the primary binding agent and the reinforcement material used in the composite.

This category is situated within Chapter 68, which deals with articles of stone, plaster, cement, asbestos, mica, and similar materials. Unlike raw materials such as Portland cement (Chapter 25) or articles primarily of natural stone or ceramic (Chapter 68, but in other headings), this heading specifically addresses manufactured articles where cementitious binders are combined with fibrous reinforcement. It is distinct from other headings in Section XIII that might cover finished goods made from other primary materials like glass (Chapter 70) or metal (Section XV).

The subcategories within 6811 are bifurcated based on the presence or absence of asbestos. The first subdivision, 6811.40, specifically covers articles that contain asbestos, reflecting the historical use of this material for its advantageous properties, though its use is now heavily regulated. The second, broader subdivision covers articles made from similar cementitious composites but explicitly *not* containing asbestos, such as those reinforced with cellulose fibers, synthetic fibers, or other non-asbestos materials. This distinction is crucial for trade purposes, often due to differing regulatory requirements and environmental considerations.