7304.39.0004

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: 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 of 190.5 mm or more but not exceeding 285.8 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: 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 exceeding 285.8 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Galvanized, having an outside diameter not exceeding 114.3 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter less than 38.1 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm: Having a wall thickness exceeding 12.7 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: Having a wall thickness less than 12.7 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: Having a wall thickness of 19 mm or more

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter exceeding 285.8 mm 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: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: 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

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: Having a wall thickness of 19 mm or more

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter exceeding 406.4 mm: Having a wall thickness less than 19 mm

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: Other, of circular cross section, of iron or nonalloy steel: Other Other: Other: Having an outside diameter exceeding 406.4 mm: Having a wall thickness of 19 mm or more