7304.29.10.50 - Having a wall thickness less than 12.7 mm

This HTS classification covers seamless tubes and pipes, specifically casing, made from iron or non-alloy steel. These are essential components used in the drilling industry for oil and gas extraction. The critical defining characteristic for this subcategory is the wall thickness, which must be less than 12.7 millimeters. The casing must also have an outside diameter ranging from greater than 285.8 mm up to and including 406.4 mm, and be either threaded or coupled for assembly.

Distinguishing this category from its sibling, 7304.29.10.60, is solely based on wall thickness. While both are seamless casing for oil and gas drilling with the same diameter range and threaded/coupled nature, this classification is for those with thinner walls (under 12.7 mm), whereas the sibling category encompasses casing with walls measuring 12.7 mm or more. This precise distinction is crucial for accurate customs declarations.

As this is a leaf node in the HTS database, there are no further subcategories under this specific classification. Therefore, the focus remains on precisely defining the physical attributes and intended use of the goods to ensure correct classification. Examples of goods falling under this heading would include specific sizes of steel casing used in shallow or less demanding oil and gas well drilling operations where thinner wall requirements are met.