7225.91.00.00 - Electrolytically plated or coated with zinc

This category specifically encompasses flat-rolled products of other alloy steel, with a width of 600 millimeters or more, that have been electrolytically plated or coated with zinc. Electrolytic plating involves using an electric current to deposit a thin layer of zinc onto the steel surface, resulting in a smooth, uniform, and often bright finish. This method is preferred for applications requiring a high-quality surface appearance or precise coating thickness.

It is important to distinguish this classification from its siblings. HTS code 7225.92.00.00 covers products "otherwise plated or coated with zinc," implying methods other than electrolysis, such as hot-dip galvanizing or mechanical plating. Category 7225.99.00.00 is a residual category for any other flat-rolled products of other alloy steel, of a width of 600 mm or more, that are plated or coated with zinc but do not fit the electrolytic or other specific methods. Therefore, the defining characteristic here is the electrolytic process of zinc application.

As this is a leaf node in the HTS structure, there are no further subcategories. Classification under 7225.91.00.00 is final and determined by the presence of other alloy steel, the specified width, and the explicit method of electrolytic zinc plating. Examples of goods that would fall here include certain types of steel sheets and coils used in automotive manufacturing, appliance production, or construction where a corrosion-resistant and aesthetically pleasing zinc coating applied through electrolysis is required.