Section XV — Base metals and articles of base metal
Chapter 73 — Articles of iron or steel
Heading 7305 — Other tubes and pipes (for example, welded, riveted or similarly closed), having circular crosssections, the external diameter of which exceeds 406.4 mm, of iron or steel.
National subdivision 7305.3 — Other, welded:
Subheading 7305.31 — Longitudinally welded
HS code
7305.31.10 High-pressure hydro-electric conduits of steel whether or not reinforced
Last Verified Date - 1 October 2026
Common commodities
High pressure reinforced steel penstock pipesLongitudinally welded hydroelectric water conduitsSteel penstock pipes for power generationReinforced steel high-pressure water pipesLarge diameter welded hydroelectric conduitsPenstock pipe for power transmissionLongitudinally welded steel pressure penstockHydroelectric reinforced steel water pipelineSteel penstock for hydropower plantsWelded large diameter high-pressure penstock