8307.90.30.00 - With fittings

This HTS category, 8307.90.30.00, specifically covers flexible tubing of base metal, other than copper or aluminum, that are supplied with fittings attached. These fittings are essential components that allow for the connection and integration of the flexible tubing into a system. Examples include threaded connectors, flanges, or other specialized joining mechanisms that are permanently affixed to the tubing. The tubing itself is constructed from base metals not otherwise specified in Chapter 83, such as steel, iron, or other alloys, and is designed for flexibility in its application.

This classification is distinguished from its sibling category, 8307.90.60.00 ("Other"), by the explicit presence of fittings. While both categories pertain to flexible tubing of other base metals, the "-.30.00" code is reserved for those instances where the tubing is furnished with connecting hardware. Therefore, if the flexible tubing of base metal (not copper or aluminum) is imported or exported without any attached fittings, it would fall under the "Other" classification.

As this is a leaf node within the HTS classification system, there are no further subcategories branching from 8307.90.30.00. Classification within this specific code is determined by the material composition of the tubing (other base metal) and the definitive presence of fittings. The absence of further subdivisions means that all flexible tubing of other base metals with fittings will be classified here, provided they do not meet the criteria for other more specific headings or subheadings within Section XV.