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 19 Spiral or helical submerged arc welded 73 05 19 10 Spiral or helical submerged arc welded Commodity Code Description 73 05 19 10 00 Spiral or helical submerged arc welded
