3917.31.00.00 - Flexible tubes, pipes and hoses, having a minimum burst pressure of 27.6 MPa

This HTS classification covers flexible tubes, pipes, and hoses made of plastics, specifically those designed to withstand a minimum burst pressure of 27.6 MPa. This high burst pressure threshold indicates robust construction intended for demanding applications where significant internal pressure is expected. Examples would include high-pressure hydraulic hoses, industrial pneumatic tubing, or automotive fuel lines that meet this specific pressure rating.

It is crucial to distinguish this category from its siblings. HTS 3917.32 and 3917.33 cover "other" flexible tubes, pipes, and hoses that are not reinforced and are classified based on whether they are supplied with fittings. HTS 3917.39 addresses remaining "other" flexible plastic hoses not covered by the aforementioned categories. Therefore, the key differentiator for 3917.31.00.00 is the explicit requirement of a minimum burst pressure of 27.6 MPa, indicating a specialized product built for high-pressure environments.

As this is a leaf node, there are no further subcategories within 3917.31.00.00. Classification at this level is determined solely by the material (plastics), flexibility, and the specified minimum burst pressure criterion. Importers and exporters should ensure that the product's technical specifications, particularly its burst pressure rating, are clearly documented to confirm correct classification.