7304.11.00.20 - Having an outside diameter not exceeding 114.3 mm

This HTS classification, 7304.11.00.20, specifically covers seamless tubes, pipes, and hollow profiles made of iron or steel that are designed for use in oil or gas pipelines and are constructed from stainless steel. The defining characteristic of this subcategory is its outside diameter, which must not exceed 114.3 mm (4.5 inches). These are typically smaller diameter pipes used in various segments of pipeline infrastructure where robust, corrosion-resistant material is essential.

This category is distinguished from its siblings by its precise diameter limitation. HTS 7304.11.00.50 covers similar stainless steel line pipe but for larger diameters, specifically exceeding 114.3 mm but not exceeding 406.4 mm, while HTS 7304.11.00.80 encompasses the largest diameter line pipe in this stainless steel group, exceeding 406.4 mm. Therefore, the key differentiator for 7304.11.00.20 is the requirement for a smaller outside diameter.

As this is a leaf node within the HTS structure, there are no further subcategories to introduce. Classification within this code is solely determined by the material (stainless steel), the intended use (line pipe for oil or gas pipelines), and the specified outside diameter not exceeding 114.3 mm. Importers and exporters should ensure these criteria are met for accurate classification.