242013 Other tubes and pipes, of circular cross section, of steel

24201310 Tubes and pipes, of circular cross-section, seamless, of stainless steel (excluding line pipe of a kind used for oil or gas pipelines and casing, tubing and drill pipe used for oil or gas drilling) 24201330 Precision tubes and pipes, of circular cross-section, cold-drawn or cold-rolled, seamless, of steel other than stainless steel 24201350 Tubes and pipes, of circular cross-section, cold-drawn or cold-rolled, seamless, of steel other than stainless steel (excluding precision tubes and pipes) 24201370 Tubes and pipes, of circular cross-section, hot finished, seamless, of steel other than stainless steel (excluding line pipe of a kind used for oil or gas pipelines and casing, tubing and drill-pipe used for oil or gas drilling)