73.04.2 -tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: --casing pipes (casing) or production (tubing) and drill pipes, of the kind used for oil or gas extraction
73.04.29 -tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: --casing pipes (casing) or production (tubing) and drill pipes, of the kind used for oil or gas extraction ---other:
73.04 -tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel:
73.04.2 -tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: --casing pipes (casing) or production (tubing) and drill pipes, of the kind used for oil or gas extraction
73.04.29 -tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: --casing pipes (casing) or production (tubing) and drill pipes, of the kind used for oil or gas extraction ---other: