HS Code Heading 7304

7304.11.00 Stainless steel, seamless line pipe used for oil or gas pipelines 7304.19.10 Iron (o/than cast) or nonalloy steel, seamless line pipe used for oil and gas pipelines 7304.19.50 Alloy (other than stainless) steel, seamless line pipe used for oil or gas pipelines 7304.22.00 Stainless steel, seamless drill pipe, of a kind used in drilling for oil or gas 7304.23.30 Iron (o/than cast) or nonalloy steel, seamless drill pipe, of a kind used in drilling for oil or gas 7304.23.60 Alloy (other than stainless) steel, seamless drill pipe, of a kind used in drilling for oil or gas 7304.24.30 Stainless steel, seamless casing pipe, threaded or coupled, of a kind used in drilling for oil or gas 7304.24.40 Stainless steel, seamless casing pipe, not threaded or coupled, of a kind used in drilling for oil or gas 7304.24.60 Stainless steel, seamless tubing, of a kind used in drilling for oil or gas 7304.29.10 Iron (o/than cast) or nonalloy steel, seamless casing pipe, threaded or coupled, of a kind used in drilling for oil or gas 7304.29.20 Iron (o/than cast) or nonalloy steel, seamless casing pipe, not threaded or coupled, of a kind used in drilling for oil or gas 7304.29.31 Alloy (other than stainless) steel, seamless casing pipe, threaded or coupled, of a kind used in drilling for oil or gas 7304.29.41 Alloy (other than stainless) steel, seamless casing pipe, not threaded or coupled, of a kind used in drilling for oil or gas 7304.29.50 Iron (o/than cast) or nonalloy, seamless tubing, of a kind used in drilling for oil or gas 7304.29.61 Alloy (other than stainless) steel, seamless tubing, of a kind used in drilling for oil or gas 7304.31.30 Iron (o/than cast) or nonalloy steel, seamless, cold-drawn or cold-rolled, hollow bars w/circular cross section 7304.31.60 Iron (o/than cast) or nonalloy steel, seamless, cold-drawn or cold-rolled, tubes, pipes & hollow profiles, w/circular cross section, nesoi 7304.39.00 Iron (o/than cast) or nonalloy steel, seamless, not cold-drawn or cold-rolled, tubes, pipes and hollow prof., w/circular cross sect., nesoi 7304.41.30 Stainless steel, seamless, cold-drawn/cold-rolled, tubes, pipes and hollow profiles, w/circular cross section & extern. diam less than 19mm 7304.41.60 Stainless steel, seamless, cold-drawn/cold-rolled, tubes, pipes and hollow profiles, w/circular cross section & extern. diam of 19mm or more 7304.49.00 Stainless steel, seamless, not cold-drawn/cold-rolled, tubes, pipes and hollow profiles, w/circular cross section 7304.51.10 Alloy steel (o/than stainless), seamless, cold-drawn/cold-rolled, tubes, pipes, etc., w/circ. cross sect., for mfr of ball/roller bearings 7304.51.50 Alloy steel (o/than stainless), seamless, cold-drawn/cold-rolled, tubes, pipes and hollow profiles, w/circular cross section, nesoi 7304.59.10 Alloy steel (o/than stainless), seamless, n/cold-drawn/cold-rolled, tubes, pipes, etc. w/circ. cross sect., for mfr ball/roller bearings 7304.59.20 Alloy steel (o/than stainless), seamless, n/cold-drawn/cold-rolled, tubes, pipes, etc. w/circ. cross sect., for boilers, heaters, etc 7304.59.60 Heat-resisting alloy steel (o/than stainless), seamless, n/cold-drawn/cold-rolled, tubes, pipes, etc., w/circ. cross sect., nesoi 7304.59.80 Alloy steel (o/than heat-resist or stainless), seamless, n/cold-drawn/cold-rolled, tubes, pipes and hollow prof., w/circ. cross sect., nesoi 7304.90.10 Iron (o/than cast) or nonalloy steel, seamless, tubes, pipes and hollow profiles, o/than circ. cross sect., w/wall thickness of 4 mm or more 7304.90.30 Alloy steel (o/than stainless), seamless, tubes, pipes and hollow profiles, o/than circ. cross sect., w/wall thickness of 4 mm or more 7304.90.50 Iron (o/than cast) or nonalloy steel, seamless, tubes, pipes and hollow profiles, o/than circ. cross sect., w/wall thickness less than 4 mm 7304.90.70 Alloy steel (o/than stainless), seamless, tubes, pipes and hollow profiles, o/than circ. cross sect., w/wall thickness less than 4 mm