Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 06 Other tubes, pipes and hollow profiles(eg.open seam...),of iron or steel, welded, nes 73 06 10 Line pipe of a kind used for oil or gas pipelines 73 06 10 00 Line pipe of a kind used for oil or gas pipelines Commodity Code Description 73 06 10 00 000 Line pipe of a kind used for oil or gas pipelines