Tubes, pipes and hollow profiles, seamless, of circular cross-section, of iron or non-alloy steel, not cold-drawn or cold-rolled 'cold-reduced', of an external diameter of <= 168,3 mm
Cevi, brezšivne, druge, s krožnim prečnim prerezom, iz železa ali nelegiranega jekla, druge z zunanjim premerom do vključno 168,3mm