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 11 Longitudinally electric resistance welded (ERW) Commodity Code Description 73 06 11 10 Longitudinally electric resistance welded (ERW) 73 06 11 20 Spiral or helical submerged arc welded 73 06 11 90 Other
