4805.93.40.50 - Tube and core board

This HTS classification, 4805.93.40.50, specifically covers "Tube and core board." This category is dedicated to paperboard products that are designed and manufactured for the production of tubes and cores. These often exhibit characteristics such as high strength, rigidity, and a smooth surface to facilitate efficient winding and unwinding processes in manufacturing.

Distinguishing tube and core board from its siblings involves focusing on its intended end-use. While other categories at this level, such as folding carton board or linerboard, are designed for packaging and structural components in boxes, tube and core board is specifically engineered for applications where it will be formed into cylindrical shapes to support rolled materials like paper, textiles, or films. Wet machine board, another sibling, is characterized by its manufacturing process rather than a specific end-use like tube production.

As this HTS code represents a leaf node, there are no further subcategories. Therefore, classification within 4805.93.40.50 hinges on whether the paperboard's physical properties and inherent design make it suitable for the manufacturing of tubes and cores. This often includes specific caliper, tensile strength, burst strength, and finish, which are optimized for this particular function, differentiating it from general-purpose or other specialized boards.