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 30 Pipe of a kind used to make sheath pipe (heater pipe) for heating elements of electri 73 06 30 30 Pipe of a kind used to make sheath pipe (heater pipe) for heating elements of electri Commodity Code Description 73 06 30 30 00 Pipe of a kind used to make sheath pipe (heater pipe) for heating elements of electri
