Tubes, pipes and hollow profiles, seamless, of circular crosssection, of iron or nonalloy steel, of an external diameter of > 168,3 mm but < 406,4 mm (excl. colddrawn or coldrolled, of cast iron, line pipe of a kind used for oil or gas pipelines, casing, tubing and drill pipe of a kind used in drilling for oil or gas and tubes, and gas pipes of subheading 7304 39 50)
Tubes, pipes and hollow profiles, seamless, of circular crosssection, of iron or nonalloy steel, of an external diameter of > 406,4 mm (excl. colddrawn or coldrolled, of cast iron, line pipe of a kind used for oil or gas pipelines, casing, tubing and drill pipe of a kind used in drilling for oil or gas and tubes, and gas pipes of subheading 7304 39 50)
Tubes, pipes and hollow profiles, seamless, of circular crosssection, of iron or nonalloy steel, of an external diameter of < 168,3 mm (excl. colddrawn or coldrolled, of cast iron, line pipe of a kind used for oil or gas pipelines, casing, tubing and drill pipe of a kind used in drilling for oil or gas and tubes, and gas pipes of subheading 7304 39 50)