2420 Manufacture of tubes, pipes, hollow profiles and related fittings, of steel

242011 Line pipe of a kind used for oil or gas pipelines, seamless, of steel 242012 Casing, tubing and drill pipe, of a kind used in the drilling for oil or gas, seamless, of steel 242013 Other tubes and pipes, of circular cross section, of steel 242014 Tubes and pipes, of non-circular cross-section and hollow profiles, of steel 242021 Line pipe of a kind used for oil or gas pipelines, welded, of an external diameter of > 406,4 mm, of steel 242022 Casing and tubing of a kind used in drilling for oil or gas, welded, of an external diameter of > 406,4 mm, of steel 242023 Other tubes and pipes, of circular cross section, welded, of an external diameter of > 406,4 mm, of steel 242024 Other tubes and pipes, of circular cross section, such as open seam, riveted or similarly closed, of an external diameter of > 406,4 mm, of steel 242031 Line pipe of a kind used for oil or gas pipelines, welded, of an external diameter of = 406,4 mm, of steel 242032 Casing and tubing, of a kind used in drilling for oil or gas, welded, of an external diameter of = 406,4 mm, of steel 242033 Other tubes and pipes, of circular cross section, welded, of an external diameter of = 406,4 mm, of steel 242034 Tubes and pipes, of non-circular cross-section, welded, of an external diameter of = 406,4 mm, of steel 242035 Other tubes and pipes, such as open seam, riveted or similarly closed, of an external diameter of = 406,4 mm, of steel 242040 Tube or pipe fittings of steel, not cast