7604.21.00.10 - Heat-treatable industrial alloys of a kind described in statistical note 7 to this chapter

This HTS classification, 7604.21.00.10, specifically covers hollow profiles made from aluminum alloys that are characterized as being heat-treatable and of a kind described in statistical note 7 to Chapter 76. These items are typically manufactured for industrial applications where enhanced strength and durability are achieved through heat treatment processes, such as tempering or annealing. Examples include extruded aluminum tubes and profiles with internal voids designed for structural support, fluid conveyance, or specialized manufacturing components.

It's important to distinguish this category from its sibling, 7604.21.00.90, which encompasses "other" hollow profiles of aluminum alloys. While both cover hollow shapes, 7604.21.00.10 is narrowly defined for those specifically meeting the criteria of being heat-treatable industrial alloys as per the statistical note. The "other" category would include hollow profiles made from non-heat-treatable aluminum alloys or those not intended for the specific industrial applications referenced in the statistical note.

As this is a leaf node in the HTS structure, there are no further subcategories within 7604.21.00.10. Therefore, the classification relies entirely on accurately identifying hollow aluminum alloy profiles that possess the heat-treatable characteristics stipulated by statistical note 7 for industrial use. Importers and exporters must ensure that the material composition and intended end-use align with these specific requirements to ensure correct classification.