7306.11.00.50 - With an outside diameter exceeding 114.3 mm

This HTS classification, 7306.11.00.50, specifically covers welded tubes, pipes, and hollow profiles made from stainless steel, which are designed and used for pipelines intended for the transport of oil or gas. A key defining characteristic for inclusion in this category is that the outside diameter of these pipes must exceed 114.3 millimeters.

This subcategory is distinguished from its sibling, 7306.11.00.10, solely by the external diameter. While both cover welded stainless steel line pipe for oil and gas, this category is for those pipes with an outside diameter *greater than* 114.3 mm, whereas the sibling category pertains to those with an outside diameter *not exceeding* 114.3 mm. This distinction is crucial for accurate tariff application.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification is definitively determined by the material (stainless steel), manufacturing method (welded), intended use (oil or gas pipelines), and the specific physical dimension of the outside diameter exceeding 114.3 mm. Any welded stainless steel pipe meeting these criteria falls under this tariff heading.