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HS Code 7308 covers structures and parts of structures of iron or steel, including bridges, towers, roofs, doors, windows, and construction equipment. This substantial structural category includes engineered steel components for building and infrastructure applications. Products range from prefabricated steel buildings to bridge sections and industrial structural frameworks. Manufacturing processes include cutting, drilling, welding, and various fabrication operations transforming mill products into specified structural components, often with protective coatings applied. Technical specifications focus on load-bearing capacity, dimensional precision to facilitate field assembly, compliance with building codes, and corrosion protection systems. Unlike basic steel mill products (HS 7208-7217), these items represent significant value-addition through engineering design, precision fabrication, and often modular construction approaches to create ready-to-assemble building components. This division supports construction sectors globally with durable, high-strength structural solutions that enable rapid building assembly and long-term structural integrity.