7411.22.00.00 - Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel-silver)

This HTS category, 7411.22.00.00, specifically classifies copper tubes and pipes manufactured from copper-nickel base alloys, commonly known as cupro-nickel, and copper-nickel-zinc base alloys, also referred to as nickel-silver. These alloys are characterized by their distinct metallic compositions, conferring unique properties such as enhanced corrosion resistance and strength. The classification hinges on the presence of copper as the primary metal, alloyed with significant proportions of nickel, and in the case of nickel-silver, also zinc.

Distinguishing this category from its siblings, 7411.21 and 7411.29, is crucial. While 7411.21 covers tubes and pipes made from copper-zinc base alloys (brass), this category focuses on alloys where nickel is a primary alloying element alongside copper. Category 7411.29 encompasses other copper alloy tubes and pipes not specifically enumerated elsewhere within the 7411.2x range. Therefore, the precise chemical composition of the alloy is the determining factor for correct classification under 7411.22.00.00.

As this is a leaf node within the HTS structure, there are no further subcategories to introduce. The classification is specific to the material composition. Examples of goods falling under this classification include, but are not limited to, seamless or welded tubes and pipes used in shipbuilding, heat exchangers, marine applications, and other industrial settings where the superior corrosion resistance of cupro-nickel or nickel-silver alloys is advantageous. The physical form (tube or pipe) and the base metal (copper) remain consistent with the parent category, with the specific alloy defining the subdivision.