Harmonized System
Section XV > Chapter 73 > Heading 7304 > 7304.3 > 7304.31
Cold-drawn or cold-rolled (cold-reduced)
Section XV > Chapter 73 > Heading 7304 > 7304.4 > 7304.41
Cold-drawn or cold-rolled (cold-reduced)
Section XV > Chapter 73 > Heading 7304 > 7304.5 > 7304.51
Cold-drawn or cold-rolled (cold-reduced)
Section XV > Chapter 73 > Heading 7305
Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross-sections, the external diameter of which exceeds 406.4 mm, of iron or steel.
Section XV > Chapter 73 > Heading 7305 > 7305.1
Line pipe of a kind used for oil or gas pipelines