Heading 7304: 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 Of stainless steel

Of stainless steel Having an outside diameter not exceeding 114.3 mm

Of stainless steel Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm

Of stainless steel Having an outside diameter exceeding 406.4 mm

Other Of iron or nonalloy steel

Of iron or nonalloy steel Having an outside diameter not exceeding 114.3 mm

Of iron or nonalloy steel Having an outside diameter exceeding 114.3 mm but less than 215.9 mm

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

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

Of iron or nonalloy steel Having an outside diameter exceeding 406.4 mm

Other Of other alloy steel

Of other alloy steel Having an outside diameter not exceeding 114.3 mm

Of other alloy steel Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm

Of other alloy steel Having an outside diameter exceeding 406.4 mm

Casing, tubing and drill pipe, of a kind used in drilling for oil or gas Drill pipe of stainless steel

Having an outside diameter not exceeding 168.3 mm Having a wall thickness not exceeding 9.5 mm

Having an outside diameter not exceeding 168.3 mm Having a wall thickness exceeding 9.5 mm

Drill pipe of stainless steel Having an outside diameter exceeding 168.3 mm

Other drill pipe Of iron or nonalloy steel

Other drill pipe Of alloy steel

Having an outside diameter not exceeding 168.3 mm Having a wall thickness not exceeding 9.5 mm

Having an outside diameter not exceeding 168.3 mm Having a wall thickness exceeding 9.5 mm

Of alloy steel Having an outside diameter exceeding 168.3 mm

Casing Threaded or coupled

Having an outside diameter less than 215.9 mm Having a wall thickness less than 12.7 mm

Having an outside diameter less than 215.9 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more

Threaded or coupled Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm

Threaded or coupled Having an outside diameter exceeding 406.4 mm

Casing Other

Having an outside diameter less than 215.9 mm Having a wall thickness less than 12.7 mm

Having an outside diameter less than 215.9 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 12.7 mm or more

Other Having an outside diameter exceeding 406.4 mm

Other, of stainless steel Tubing

Having an outside diameter not exceeding 114.3 mm Having a wall thickness not exceeding 9.5 mm

Having an outside diameter not exceeding 114.3 mm Having a wall thickness exceeding 9.5 mm

Tubing Having an outside diameter exceeding 114.3 mm but less than 215.9 mm

Tubing Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm

Tubing Having an outside diameter exceeding 406.4 mm

Of iron or nonalloy steel Threaded or coupled

Having an outside diameter less than 215.9 mm Having a wall thickness less than 12.7 mm

Having an outside diameter less than 215.9 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 12.7 mm or more

Threaded or coupled Having an outside diameter exceeding 406.4 mm

Of iron or nonalloy steel Other

Having an outside diameter less than 215.9 mm Having a wall thickness less than 12.7 mm

Having an outside diameter less than 215.9 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 12.7 mm or more

Other Having an outside diameter exceeding 406.4 mm

Of other alloy steel Threaded or coupled

Having an outside diameter less than 215.9 mm Having a wall thickness less than 12.7 mm

Having an outside diameter less than 215.9 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 12.7 mm or more

Threaded or coupled Having an outside diameter exceeding 406.4 mm

Of other alloy steel Other

Having an outside diameter less than 215.9 mm Having a wall thickness less than 12.7 mm

Having an outside diameter less than 215.9 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 12.7 mm or more

Other Having an outside diameter exceeding 406.4 mm

Tubing Of iron or nonalloy steel

Having an outside diameter not exceeding 114.3 mm Having a wall thickness not exceeding 9.5 mm

Having an outside diameter not exceeding 114.3 mm Having a wall thickness exceeding 9.5 mm

Of iron or nonalloy steel Having an outside diameter exceeding 114.3 mm but less than 215.9 mm

Of iron or nonalloy steel Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm

Of iron or nonalloy steel Having an outside diameter exceeding 406.4 mm

Tubing Of other alloy steel

Having an outside diameter not exceeding 114.3 mm Having a wall thickness not exceeding 9.5 mm

Having an outside diameter not exceeding 114.3 mm Having a wall thickness exceeding 9.5 mm

Of other alloy steel Having an outside diameter exceeding 114.3 mm but less than 215.9 mm

Of other alloy steel Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm

Of other alloy steel Having an outside diameter exceeding 406.4 mm

Cold-drawn or cold-rolled (cold-reduced) Hollow bars

Cold-drawn or cold-rolled (cold-reduced) Other

Other Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters

Other

Other, of circular cross section, of iron or nonalloy steel Other

Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters Having an outside diameter less than 38.1 mm

Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters Having an outside diameter of 38.1 mm or more but less than 190.5 mm

Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm

Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters Having an outside diameter exceeding 285.8 mm

Other Galvanized, having an outside diameter not exceeding 114.3 mm

Other Having an outside diameter less than 38.1 mm

Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm Having a wall thickness less than 6.4 mm

Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm

Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm Having a wall thickness exceeding 12.7 mm

Having an outside diameter exceeding 114.3 mm but less than 190.5 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 114.3 mm but less than 190.5 mm Having a wall thickness of 12.7 mm or more but less than 19 mm

Having an outside diameter exceeding 114.3 mm but less than 190.5 mm Having a wall thickness of 19 mm or more

Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more but less than 19 mm

Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm Having a wall thickness of 19 mm or more

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 12.7 mm or more but less than 19 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 19 mm or more

Having an outside diameter exceeding 406.4 mm Having a wall thickness less than 19 mm

Having an outside diameter exceeding 406.4 mm Having a wall thickness of 19 mm or more

Cold-drawn or cold-rolled (cold-reduced) Of an external diameter of less than 19 mm

Of an external diameter of less than 19 mm Of high-nickel alloy steel

Other Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters

Other Other

Cold-drawn or cold-rolled (cold-reduced) Other

Other Of high-nickel alloy steel

Other Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters

Other Other

Other, of circular cross section, of stainless steel Other

Other Of high-nickel alloy steel

Other Hollow bars

Other Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters

Other Other

Cold-drawn or cold-rolled (cold-reduced) Suitable for use in the manufacture of ball or roller bearings

Cold-drawn or cold-rolled (cold-reduced) Other

Other Of high-nickel alloy steel

Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters Of heat-resisting steel

Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters Other

Other Other

Other Suitable for use in the manufacture of ball or roller bearings

Other Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters

Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters Of heat-resisting steel

Other Having an outside diameter less than 38.1 mm

Other Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm

Other Having an outside diameter exceeding 114.3 mm but less than 190.5 mm

Other Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm

Other Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm

Other Having an outside diameter exceeding 406.4 mm

Other Of heat-resisting steel

Other Other

Other Having an outside diameter less than 38.1 mm

Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm Having a wall thickness less than 6.4 mm

Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm

Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm Having a wall thickness exceeding 12.7 mm

Having an outside diameter exceeding 114.3 mm but less than 190.5 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 114.3 mm but less than 190.5 mm Having a wall thickness of 12.7 mm or more but less than 19 mm

Having an outside diameter exceeding 114.3 mm but less than 190.5 mm Having a wall thickness of 19 mm or more

Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm Having a wall thickness less than 12.7 mm

Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm Having a wall thickness of 12.7 mm or more but less than 19 mm

Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm Having a wall thickness of 19 mm or more

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness less than 12.7 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 12.7 mm or more but less than 19 mm

Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm Having a wall thickness of 19 mm or more

Other Having an outside diameter exceeding 406.4 mm

Having a wall thickness of 4 mm or more Of iron or nonalloy steel

Having a wall thickness of 4 mm or more Of alloy steel

Having a wall thickness of less than 4 mm Of iron or nonalloy steel

Having a wall thickness of less than 4 mm Of alloy steel