7304.19.10 - Of iron or nonalloy steel

This HTS category, 7304.19.10, specifically covers seamless tubes, pipes, and hollow profiles made from iron or non-alloy steel that are designed for use as "line pipe" in oil and gas pipelines. These are distinguished from other steel products by their intended application in transporting hydrocarbons. The "Of iron or nonalloy steel" descriptor is crucial for differentiating these goods from those made of alloy steel.

Within the broader classification of line pipe, this particular subcategory, 7304.19.10, is further delineated by specific physical dimensions. It serves as a grouping for line pipe made from non-alloy steel that falls into distinct diameter ranges. The distinctions between these subcategories are based on the outside diameter, reflecting different operational requirements and manufacturing specifications within the pipeline industry.

The subcategories of 7304.19.10 are designed to create a granular classification based on the outside diameter of the pipe. These subdivisions include pipes with an outside diameter not exceeding 114.3 mm, those ranging from over 114.3 mm to less than 215.9 mm, pipes between 215.9 mm and 406.4 mm, and finally, those exceeding 406.4 mm. This dimensional breakdown allows for precise classification based on the physical characteristics of the pipe, which is often a critical factor in its intended use and value.