7304.29.10.10 - Having a wall thickness less than 12.7 mm

This HTS classification, 7304.29.10.10, specifically identifies seamless tubes and pipes of iron or steel that are designed for use in drilling for oil or gas, particularly those used as casing. The defining characteristic for this category is their wall thickness, which must be less than 12.7 mm. These items are further refined by their purpose as casing, meaning they line the borehole to prevent collapse and allow for the extraction of oil or gas.

This category is distinguished from its sibling, 7304.29.10.20, solely by the criterion of wall thickness. While both classifications pertain to seamless casing, tubing, and drill pipe used in oil and gas drilling, 7304.29.10.10 covers those with a wall thickness below the 12.7 mm threshold, whereas the sibling category encompasses those with a wall thickness of 12.7 mm or greater. This distinction is crucial for accurate customs declarations and duty assessment.

As this is a leaf node in the HTS classification system, there are no further subcategories. Therefore, the focus remains on the precise physical specifications and intended use. Examples of goods falling under this classification would include various diameters of seamless steel pipe specifically manufactured and threaded or coupled for use in constructing oil and gas wells, provided their wall thickness meets the specified less-than-12.7 mm requirement.