7225.30 - Other, not further worked than hot-rolled, in coils:

This HTS category, 7225.30, encompasses flat-rolled products of other alloy steel with a width of 600 mm or more. Specifically, it covers material that has undergone hot-rolling but has not been further processed beyond this stage, and importantly, is presented in coils. "Other alloy steel" refers to steels that contain specific alloying elements beyond those found in standard carbon steels, imparting particular properties such as increased strength, hardness, or corrosion resistance.

Distinguishing this category from its siblings, 7225.30 focuses on hot-rolled products *in coils*. This differentiates it from 7225.40, which covers similar hot-rolled products but *not in coils*, meaning they are typically cut to length. It also differs from 7225.50, which pertains to alloy steel flat-rolled products that have been cold-rolled (cold-reduced), a process that results in different surface finishes and tighter dimensional tolerances.

The subcategories within 7225.30 further refine the classification based on the physical dimensions of the hot-rolled coils. They are divided by thickness: "Of a thickness of 4.75 mm or more" and "Of a thickness of less than 4.75 mm." This distinction is crucial for tariff purposes, as different thickness ranges may be subject to varying duty rates or trade regulations, reflecting different end-use applications or manufacturing processes.