7507.20.00.00 - Tube or pipe fittings

This HTS category, 7507.20.00.00, specifically covers fittings for nickel tubes and pipes. These are articles designed to connect, terminate, or adapt nickel tubes and pipes. Examples include couplings, elbows, tees, reducers, flanges, and sleeves made of nickel or nickel alloys, intended for use in plumbing, industrial piping systems, or other applications where nickel tubing is employed. The key defining characteristic is their function as connectors or adapters for nickel conduit.

It is important to distinguish this category from its sibling, "Tubes and pipes" (7507.10.00.00). While both fall under the broader heading of nickel tubes, pipes and their fittings, this category exclusively covers the ancillary connecting and terminating pieces, not the lengths of tubing or piping themselves. The latter are classified separately based on their form and function as conduits.

As a leaf node, 7507.20.00.00 does not have further subcategories. Therefore, classification within this heading relies on confirming that the article in question is indeed a fitting designed for nickel tubes and pipes, made from nickel or nickel alloys, and is not otherwise specifically classified. The material composition and the article's specific function in a piping system are paramount for accurate classification.