Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 06 Other tubes, pipes and hollow profiles of iron or steel, welded, nes 73 06 90 Other high pressure pipes, with an external diameter of 12.5 mm or more 73 06 90 95 Other high pressure pipes, with an external diameter of 12.5 mm or more Commodity Code Description 73 06 90 95 00 Other high pressure pipes, with an external diameter of 12.5 mm or more