7305 Tubes and Pipes, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Flat-rolled Products of Iron or Steel `e.g., Welded, Riveted or Similarly Closed`

7305 (01/1988-..) Tubes and Pipes, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Flat-rolled Products of Iron or Steel `e.g., Welded, Riveted or Similarly Closed` 73051100 (01/1988-..) Line Pipe of a Kind Used for oil or gas Pipelines, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Iron or Steel, Longitudinally Submerged arc Welded 73051200 (01/1988-..) Line Pipe of a Kind Used for oil or gas Pipelines, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Iron or Steel, Longitudinally arc Welded (Excl. Products Longitudinally Submerged arc Welded) 73051900 (01/1988-..) Line Pipe of a Kind Used for oil or gas Pipelines, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Flat-rolled Products of Iron or Steel (Excl. Products Longitudinally arc Welded) 73052000 (01/2004-..) Casing of a Kind Used in Drilling for oil or Gas, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Flat-rolled Products of Iron or Steel 73052010 (01/1988-12/2003) Casing of a Kind Used in Drilling for oil or Gas, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Iron or Steel, Longitudinally Welded 73052090 (01/1988-12/2003) Casing of a Kind Used in Drilling for oil or Gas, Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Flat-rolled Products of Iron or Steel (Excl. Products Longitudinally Welded) 73053100 (01/1988-..) Tubes and Pipes Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Iron or Steel, Longitudinally Welded (Excl. Products of a Kind Used for oil or gas Pipelines or of a Kind Used in Drilling for oil or Gas) 73053900 (01/1988-..) Tubes and Pipes Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Iron or Steel, Welded (Excl. Products Longitudinally Welded or of a Kind Used for oil or gas Pipelines or of a Kind Used in Drilling for oil or Gas) 73059000 (01/1988-..) Tubes and Pipes Having Circular Cross-sections and an External Diameter of > 406,4 mm, of Flat-rolled Products of Iron or Steel, Welded (Excl. Welded Products or Products of a Kind Used for oil or gas Pipelines or of a Kind Used in Drilling for oil or GaS)