8481.90.30.00 - Of iron or steel

This HTS category, 8481.90.30.00, specifically covers parts for taps, cocks, valves, and similar appliances that are constructed from iron or steel. These parts are integral components of devices used to control the flow of liquids or gases in systems such as pipes, boiler shells, tanks, and vats. This includes parts for pressure-reducing valves and thermostatically controlled valves. The critical classification criterion for this sub-heading is the material composition of the part, requiring it to be made of iron or steel.

This category is distinguished from its sibling category, 8481.90.10.00, which covers similar parts but is specifically for those made of copper. Additionally, it differs from 8481.90.50.00, which encompasses parts made from any other materials not specified in the iron/steel or copper categories. Therefore, the primary differentiator is the metallic composition of the valve or tap component.

As a leaf node, this category does not have further subcategories. Classification under 8481.90.30.00 is definitive once the part is identified as belonging to the broad category of taps, cocks, valves, and similar appliances, and its material composition is confirmed to be iron or steel. Examples of items classified here could include steel valve bodies, iron bonnets, or steel stems for various types of valves.