Tubes, pipes and hollow profiles, seamless, of circular cross-section, f alloy steel  straight and of uniform wall-thickness, cont. by weight>= 0,9% but<=1,15%carb.and>=0,5% but<=2%chr.,whether or not cont. by weight<= 0,5%molybd., length of> 0,5m
Cevi, brezšivne, druge, s krožnim prečnim prerezom, legirano jeklo, neobdelano, za proizvodnjo cevi in votlih profilov, več kot 0,5m