7304.24.40 - Other

This category encompasses seamless casing pipes made of iron or steel, specifically designed for use in oil and gas drilling operations. These are distinct from drill pipe or tubing, focusing solely on the casing function which supports the wellbore. The material is stainless steel, a key distinguishing factor from other categories within 7304 that may use different ferrous alloys.

While the sibling category 7304.24.30 covers threaded or coupled casing, this category is reserved for casing pipes that do not have these specific end-finishing types. The classification here is based on the physical dimensions of the pipe's outer diameter.

The subdivisions within this category are determined by precise outside diameter measurements. This granular approach allows for accurate tariff application based on the specific size of the casing, reflecting different market segments and potential uses within the oil and gas industry. The subcategories are: having an outside diameter less than 215.9 mm, having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm, having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm, and finally, having an outside diameter exceeding 406.4 mm, denoted by 7304.24.40.80.