7304.24.60.75 - Having an outside diameter exceeding 406.4 mm

This HTS category, 7304.24.60.75, specifically classifies seamless tubes and pipes made of iron or steel, belonging to the category of casing, tubing, and drill pipe used in oil and gas drilling. The defining characteristic of goods within this subcategory is their substantial size, with an outside diameter exceeding 406.4 mm. These are typically heavy-duty pipes designed for demanding downhole applications in exploration and extraction processes, such as robust casing to support wellbore integrity or large-diameter tubing for production.

This classification distinguishes itself from its sibling categories based purely on the physical dimension of the pipe's outside diameter. Unlike the categories for pipes with smaller diameters (not exceeding 114.3 mm, or exceeding 114.3 mm but less than 215.9 mm, or of 215.9 mm or more but not exceeding 406.4 mm), this node captures the largest dimension of casing, tubing, and drill pipe within the context of stainless steel. This precise diameter threshold is a critical determinant for customs officials to ensure accurate tariff application.

As this is a leaf node within the HTS structure, there are no further subcategories to detail. The classification is complete at this level, meaning that any seamless stainless steel casing, tubing, or drill pipe with an outside diameter exceeding 406.4 mm, intended for oil and gas drilling, will fall under this specific code. The focus remains on the material (stainless steel), the intended use (oil and gas drilling), and the specific dimensional criteria (outside diameter exceeding 406.4 mm) to ensure proper classification.