7304.19.10

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Line pipe of a kind used for oil or gas pipelines: Other: Of iron or nonalloy steel Having an outside diameter not exceeding 114.3 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Line pipe of a kind used for oil or gas pipelines: Other: Of iron or nonalloy steel Having an outside diameter exceeding 114.3 mm but less than 215.9 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Line pipe of a kind used for oil or gas pipelines: Other: Of iron or nonalloy steel Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm: Having a wall thickness less than 12.7 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Line pipe of a kind used for oil or gas pipelines: Other: Of iron or nonalloy steel Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm: Having a wall thickness of 12.7 mm or more

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Line pipe of a kind used for oil or gas pipelines: Other: Of iron or nonalloy steel Having an outside diameter exceeding 406.4 mm