The essential character test applies: if the textile layer provides the primary structural function of the tube, the article falls under 5909. Hose where rubber or plastics is the dominant structural material is generally classified in the rubber or plastics chapters, even if a textile braid is present as reinforcement. The proportion and role of each material determines which chapter governs.

No—the heading explicitly covers textile hosepiping 'with or without lining, armor or accessories of other materials.' Metal end fittings, wire reinforcement, or plastic linings do not disqualify an article from 5909 as long as the textile component remains the primary structural element of the tubing itself.