Tubes, pipes and hollow profiles, welded, of circular cross-section, of iron or non-alloy steel (excl. products having internal and external circular cross-sections and an external diameter of > 406,4 mm, or line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas) (HS code(s): 730630); Steel pipes and tubes for specific use (ICS code(s): 77.140.75)