Tubes, pipes and hollow profiles, welded, of noncircular crosssection, of iron or steel (excl. tubes and pipes having internal and external circular crosssections and an external diameter of > 406,4 mm, 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, and tubes and pipes and hollow profiles of square or rectangular crosssection)
Tubes and pipes and hollow profiles, welded, of square or rectangular crosssection, of iron or steel