HS 73 Articles of iron or steel
HS 73 Line pipe of a kind used for oil/gas pipelines, welded, of stainless steel
HS 7305 Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel:
HS 7305.20 Casing of a kind used in drilling for oil or gas:
HS 7305.90 Casing of a kind used in drilling for oil or gas:
HS 7306 Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel:
HS 7306.19 Other:
HS 7306.21 Other, welded, of circular cross section, of other alloy steel:
HS 7306.21 Welded of stainless steel:
HS 7306.29 Other:
HS 7306.29 Other, welded, of circular cross section, of other alloy steel:
HS 7306.90 Other, welded, of circular cross section, of other alloy steel: