7304.29.20.10 - Having a wall thickness less than 12.7 mm

This HTS classification, 7304.29.20.10, specifically covers seamless tubes, pipes, and hollow profiles made of iron or nonalloy steel, intended for use in drilling for oil or gas. Within the broader category of "Casing" for such drilling operations, this particular code applies to those with an outside diameter less than 215.9 mm and a wall thickness **less than 12.7 mm**. These are integral components in the construction and operation of oil and gas wells, providing structural integrity and pathways for extraction.

The key distinguishing feature of this category from its sibling, 7304.29.20.20, lies solely in the wall thickness. While both cover casing used in oil and gas drilling with an outside diameter under 215.9 mm, this code is exclusively for products with a wall thickness strictly below 12.7 mm. The sibling category, conversely, applies to items with a wall thickness of 12.7 mm or greater. This precise measurement is critical for determining the appropriate classification and any associated duties or regulations.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, classification within 7304.29.20.10 is definitive once the criteria of being seamless, made of iron or nonalloy steel, used for oil/gas drilling (casing), having an outside diameter less than 215.9 mm, and possessing a wall thickness less than 12.7 mm are met. Examples of such goods would include specific lengths of seamless steel pipe used as casing in exploration and production activities where lighter wall thickness is sufficient for the operational requirements.