7306.29.10.30 - Imported with coupling

This HTS category, 7306.29.10.30, specifically covers tubular goods of iron or nonalloy steel that are designed for drilling operations in the oil and gas industry, particularly when imported with an integrated coupling. These articles are a subset of "casing" used in such drilling, meaning they are intended to line the wellbore to prevent collapse and seal off different zones. The crucial defining characteristic for this classification is the presence of a pre-attached coupling, which facilitates the connection of multiple pipe lengths together during the drilling process.

This classification is distinct from its sibling category, 7306.29.10.90, which denotes "Other" casing and tubing of a kind used in drilling for oil or gas that are of iron or nonalloy steel and are threaded or coupled, but *without* the coupling being an inherent part of the imported item. In essence, if the coupling is a separate component intended to be threaded onto the pipe upon arrival, it would fall under the "Other" classification. However, if the coupling is already permanently affixed or integral to the pipe when imported, this specific code applies.

As this node represents a leaf in the HTS classification structure, there are no further subcategories. Therefore, classification under 7306.29.10.30 hinges directly on confirming the material (iron or nonalloy steel), the application (oil and gas drilling casing or tubing), and the presence of an attached coupling as an imported unit. This ensures that goods specifically designed for efficient on-site assembly in demanding drilling environments are correctly identified.