7304.49.00.05 - Of high-nickel alloy steel

This HTS category, 7304.49.00.05, specifically classifies seamless tubes, pipes, and hollow profiles manufactured from iron or steel, which are further defined as being made of high-nickel alloy steel. These articles are characterized by their seamless construction and the specific material composition, requiring a significant proportion of nickel to achieve desired properties such as enhanced corrosion resistance or high-temperature strength. This classification falls under the broader group of stainless steel tubes, pipes, and hollow profiles of circular cross-section.

The distinguishing feature of this subcategory is the explicit requirement for the steel to be a "high-nickel alloy steel." This differentiates it from other stainless steel products that may not meet this specific alloy composition threshold. While other categories within the "Other" designation might cover seamless stainless steel tubes of circular cross-section, this node pinpoints those with a particular high-nickel alloy content.

As this is a leaf node, there are no further subdivisions. Therefore, the focus for classification under this code is on confirming the seamless construction, the circular cross-section, the fact that it is made of stainless steel, and crucially, that the stainless steel composition qualifies as a "high-nickel alloy steel" based on established metallurgical definitions and import/export regulations.