7210.30.00.30 - Of high-strength steel

This HTS category, 7210.30.00.30, specifically classifies flat-rolled products of iron or non-alloy steel, with a width of 600 mm or more, that have been clad, plated, or coated, and are specifically electrolytically plated or coated with zinc, and are of high-strength steel. The key defining characteristic here is the combination of electrolytic zinc coating and the high-strength steel composition of the base material. These are generally produced through continuous processes where the steel strip is passed through an electrolytic bath to deposit a zinc layer.

This category is distinguished from its sibling, 7210.30.00.60 ("Other"), which covers other forms of electrolytically plated or coated flat-rolled products of iron or non-alloy steel of a width of 600 mm or more where the steel is not specifically identified as high-strength. Therefore, the crucial differentiator is the "high-strength steel" attribute, requiring specific material properties beyond a standard non-alloy steel.

As this is a leaf node in the HTS structure, there are no further subcategories under 7210.30.00.30. Classification at this level is definitive for products meeting all the preceding criteria: flat-rolled, 600 mm width or more, iron or non-alloy steel, electrolytically zinc-plated or coated, and of high-strength steel. Examples would include specific grades of galvanized steel sheets or coils used in automotive or construction applications where enhanced structural integrity is a requirement.