Iron or steel (excluding cast iron); tubes and pipes (other than line pipe or casing of a kind used for oil or gas pipelines), longitudinally welded, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)

730531 Longitudinally welded:

7305312000 Tapered pipes and tubes of steel principally used as parts of illuminating articles

7305314000 Of iron or nonalloy steel

73053160 Of alloy steel

7305316010 Of stainless steel

7305316090 Other

7305310000 Iron or steel (excluding cast iron); tubes and pipes (other than line pipe or casing of a kind used for oil or gas pipelines), longitudinally welded, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)

73053100 Longitudinally welded

73053110 Of a wall thickness of more than 1.8 mm

73053190 Other