7304.19 - Other:

This HTS category, 7304.19, encompasses seamless tubes, pipes, and hollow profiles made of iron or steel, specifically those utilized as line pipe for transporting oil or gas. The key characteristic is their application in oil and gas pipeline infrastructure, distinguishing them from general-purpose pipes and tubes.

This classification is differentiated from its sibling, 7304.11, which specifically covers line pipe made of stainless steel. Therefore, 7304.19 is intended for line pipe constructed from materials other than stainless steel.

Within this category, further distinctions are made based on the alloy composition of the steel. Subcategory 7304.19.10 covers line pipe made of iron or nonalloy steel, while 7304.19.50 includes line pipe made of other alloy steels, allowing for more precise classification based on material properties and intended use in varying operational environments.