7610 - Aluminum structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge-sections, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, balustrades, pillars and columns); aluminum plates, rods, profiles, tubes and the like, prepared for use in structures:

Category 7610 encompasses a broad range of aluminum articles specifically prepared for use in the construction of structures. This includes major structural components like bridges, bridge sections, towers, and lattice masts, as well as elements such as roofs, roofing frameworks, balustrades, pillars, and columns. Crucially, it also covers prefabricated doors, windows, and their associated frames and thresholds, provided they are made of aluminum and intended for structural purposes. The key criterion for inclusion is the preparation and intended use of these aluminum articles in building and infrastructure projects.

As a category within Section XV, Chapter 76, this heading focuses solely on aluminum articles. It distinguishes itself from other base metal articles and aluminum products not designed for structural assembly. For instance, raw aluminum materials like ingots or unformed bars would fall under different headings. Its siblings, such as live animals in Chapter 1, highlight the vast organizational scope of the HTS, placing this industrial material classification in stark contrast to biological goods.

Within category 7610, further subdivisions clarify the specific types of structural aluminum articles. The subcategory 7610.10.00 specifically addresses doors, windows, and their frames and thresholds, carving out these common building components for more precise classification. The remaining items, encompassing the broader structural elements like bridges, towers, and columns, are grouped under 7610.90.00 as "Other," ensuring comprehensive coverage of all aluminum structural components not specifically enumerated in the preceding subcategory.