7213 - Bars and rods, hot-rolled, in irregularly wound coils, of iron or nonalloy steel:

This HTS category, 7213, encompasses bars and rods of iron or non-alloy steel that have undergone hot-rolling and are presented in irregularly wound coils. The key defining characteristics are the manufacturing process (hot-rolling) and the form of presentation (irregularly wound coils), differentiating them from products that are cold-formed or finished in a different manner. This designation is crucial for distinguishing these semi-finished or intermediate steel products from more finalized forms of steel articles.

Within the broader scope of Section XV and Chapter 72, this category specifically addresses a particular stage and form of steel bar and rod. It is distinct from other steel products that might be hot-rolled but are not in coiled form, or those that are further processed beyond the coil stage. For example, this would not include steel wire drawn from rods, or finished structural steel shapes.

The subcategories under 7213 provide further specificity based on the steel's composition or intended use. 7213.10.00.00 specifically identifies concrete reinforcing bars and rods, highlighting their application in construction. Other subdivisions, such as those for free-cutting steel (7213.20.00), denote variations in material properties that influence their subsequent manufacturing or end-use. The remaining "Other" categories serve as a catch-all for hot-rolled, irregularly coiled iron or non-alloy steel bars and rods that do not fit into the more precisely defined subheadings.