7213.91.30 - Not tempered, not treated and not partly manufactured

This HTS category, 7213.91.30, encompasses bars and rods of iron or non-alloy steel that have been hot-rolled into irregularly wound coils. Crucially, these products are not tempered, not otherwise treated (such as surface treatments or annealing beyond initial hot-rolling), and are not in a partly manufactured state beyond the coiled rod form. The defining physical characteristics for this classification are that they are of circular cross-section and measure less than 14 millimeters in diameter.

Within the broader classification of "Other" bars and rods of iron or non-alloy steel, this specific sub-heading distinguishes itself by the form (irregularly wound coils), the lack of further processing beyond hot-rolling, and the precise dimensional criteria (circular cross-section less than 14 mm). This differentiates it from other "Other" categories that might involve different cross-sections, forms, or degrees of manufacturing.

The subcategories within 7213.91.30 provide further refinement based on the intended quality or application of the wire rod. These include specialized categories for tire cord-quality, cold heading quality (CHQ), and welding quality wire rods, each often governed by specific statistical notes. An "Other" subcategory exists to capture any remaining wire rods that meet the general criteria of 7213.91.30 but do not fall into these specialized quality designations.