7306.30.50.27 - With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm

This HTS category, 7306.30.50.27, encompasses welded, circular cross-section tubes and pipes of iron or nonalloy steel that possess a wall thickness of 1.65 mm or more. Specifically, it covers those articles where the outside diameter falls within the range of more than 50.8 mm but does not exceed 114.3 mm. These are further distinguished by being galvanized and imported with a coupling.

This classification is distinct from its sibling category, 7306.30.50.26, which covers similar welded, circular tubes and pipes with a wall thickness of 1.65 mm or more, but where the outside diameter does not exceed 50.8 mm. Therefore, the key differentiator at this level is the external diameter range.

As this is a leaf node, there are no further subdivisions. Classification under 7306.30.50.27 is final for galvanized, welded, circular iron or nonalloy steel pipes and tubes meeting the specified wall thickness and outside diameter, and which are imported with a coupling. Examples of goods that would fall here include certain types of galvanized steel piping used in plumbing or construction that have been manufactured with integral couplings.