Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 05 Other circular tubes and pipes, diameter >406.4mm, of iron or steel 73 05 31 Iron/steel tubes and pipes, (excl.line pipe) longitudinally welded,>406.4mm ext. 73 05 31 00 Iron/steel tubes and pipes, (excl.line pipe) longitudinally welded,>406.4mm ext. Commodity Code Description 73 05 31 00 00 Iron/steel tubes and pipes, (excl.line pipe) longitudinally welded,>406.4mm ext.
