7304 - Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel:

Sub-classifications

Commodity Code

Description

Line pipe of a kind used for oil or gas pipelines:
- 7304 1100
  
  Of stainless steel
  - 7304 1100 20
    
    Having an outside diameter not exceeding 114.3 mm
  - 7304 1100 50
    
    Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm
  - 7304 1100 80
    
    Having an outside diameter exceeding 406.4 mm
- 7304 19
  
  Other:
  - 7304 1910
    
    Of iron or nonalloy steel
    
    7304 1910 20
    
    Having an outside diameter not exceeding 114.3 mm
    
    7304 1910 30
    
    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:
    
    7304 1910 45
    
    Having a wall thickness less than 12.7 mm
    
    7304 1910 60
    
    Having a wall thickness of 12.7 mm or more
    
    7304 1910 80
    
    Having an outside diameter exceeding 406.4 mm
  - 7304 1950
    
    Of other alloy steel
    
    7304 1950 20
    
    Having an outside diameter not exceeding 114.3 mm
    
    7304 1950 50
    
    Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm
    
    7304 1950 80
    
    Having an outside diameter exceeding 406.4 mm
Casing, tubing and drill pipe, of a kind used in drilling for oil or gas:
- 7304 2200
  
  Drill pipe of stainless steel
  - Having an outside diameter not exceeding 168.3 mm:
    
    7304 2200 30
    
    Having a wall thickness not exceeding 9.5 mm
    
    7304 2200 45
    
    Having a wall thickness exceeding 9.5 mm
  - 7304 2200 60
    
    Having an outside diameter exceeding 168.3 mm
- 7304 23
  
  Other drill pipe:
  - 7304 2330 00
    
    Of iron or nonalloy steel
  - 7304 2360
    
    Of alloy steel
    
    Having an outside diameter not exceeding 168.3 mm:
    
    7304 2360 30
    
    Having a wall thickness not exceeding 9.5 mm
    
    7304 2360 45
    
    Having a wall thickness exceeding 9.5 mm
    
    7304 2360 60
    
    Having an outside diameter exceeding 168.3 mm
- 7304 24
  
  Other, of stainless steel:
  - Casing:
    
    7304 2430
    
    Threaded or coupled
    
    Having an outside diameter less than 215.9 mm:
    
    7304 2430 10
    
    Having a wall thickness less than 12.7 mm
    
    7304 2430 20
    
    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:
    
    7304 2430 30
    
    Having a wall thickness less than 12.7 mm
    
    7304 2430 40
    
    Having a wall thickness of 12.7 mm or more
    
    7304 2430 45
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
    
    7304 2430 80
    
    Having an outside diameter exceeding 406.4 mm
    
    7304 2440
    
    Other
    
    Having an outside diameter less than 215.9 mm:
    
    7304 2440 10
    
    Having a wall thickness less than 12.7 mm
    
    7304 2440 20
    
    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:
    
    7304 2440 30
    
    Having a wall thickness less than 12.7 mm
    
    7304 2440 40
    
    Having a wall thickness of 12.7 mm or more
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm:
    
    7304 2440 50
    
    Having a wall thickness less than 12.7 mm
    
    7304 2440 60
    
    Having a wall thickness of 12.7 mm or more
    
    7304 2440 80
    
    Having an outside diameter exceeding 406.4 mm
  - 7304 2460
    
    Tubing
    
    Having an outside diameter not exceeding 114.3 mm:
    
    7304 2460 15
    
    Having a wall thickness not exceeding 9.5 mm
    
    7304 2460 30
    
    Having a wall thickness exceeding 9.5 mm
    
    7304 2460 45
    
    Having an outside diameter exceeding 114.3 mm but less than 215.9 mm
    
    7304 2460 60
    
    Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm
    
    7304 2460 75
    
    Having an outside diameter exceeding 406.4 mm
- 7304 29
  
  Other:
  - Casing:
    
    Of iron or nonalloy steel:
    
    7304 2910
    
    Threaded or coupled
    
    Having an outside diameter less than 215.9 mm:
    
    7304 2910 10
    
    Having a wall thickness less than 12.7 mm
    
    7304 2910 20
    
    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:
    
    7304 2910 30
    
    Having a wall thickness less than 12.7 mm
    
    7304 2910 40
    
    Having a wall thickness of 12.7 mm or more
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm:
    
    7304 2910 50
    
    Having a wall thickness less than 12.7 mm
    
    7304 2910 60
    
    Having a wall thickness of 12.7 mm or more
    
    7304 2910 80
    
    Having an outside diameter exceeding 406.4 mm
    
    7304 2920
    
    Other
    
    Having an outside diameter less than 215.9 mm:
    
    7304 2920 10
    
    Having a wall thickness less than 12.7 mm
    
    7304 2920 20
    
    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:
    
    7304 2920 30
    
    Having a wall thickness less than 12.7 mm
    
    7304 2920 40
    
    Having a wall thickness of 12.7 mm or more
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm:
    
    7304 2920 50
    
    Having a wall thickness less than 12.7 mm
    
    7304 2920 60
    
    Having a wall thickness of 12.7 mm or more
    
    7304 2920 80
    
    Having an outside diameter exceeding 406.4 mm
    
    Of other alloy steel:
    
    7304 2931
    
    Threaded or coupled
    
    Having an outside diameter less than 215.9 mm:
    
    7304 2931 10
    
    Having a wall thickness less than 12.7 mm
    
    7304 2931 20
    
    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:
    
    7304 2931 30
    
    Having a wall thickness less than 12.7 mm
    
    7304 2931 40
    
    Having a wall thickness of 12.7 mm or more
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm:
    
    7304 2931 50
    
    Having a wall thickness less than 12.7 mm
    
    7304 2931 60
    
    Having a wall thickness of 12.7 mm or more
    
    7304 2931 80
    
    Having an outside diameter exceeding 406.4 mm
    
    7304 2941
    
    Other
    
    Having an outside diameter less than 215.9 mm:
    
    7304 2941 10
    
    Having a wall thickness less than 12.7 mm
    
    7304 2941 20
    
    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:
    
    7304 2941 30
    
    Having a wall thickness less than 12.7 mm
    
    7304 2941 40
    
    Having a wall thickness of 12.7 mm or more
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm:
    
    7304 2941 50
    
    Having a wall thickness less than 12.7 mm
    
    7304 2941 60
    
    Having a wall thickness of 12.7 mm or more
    
    7304 2941 80
    
    Having an outside diameter exceeding 406.4 mm
  - Tubing:
    
    7304 2950
    
    Of iron or nonalloy steel
    
    Having an outside diameter not exceeding 114.3 mm:
    
    7304 2950 15
    
    Having a wall thickness not exceeding 9.5 mm
    
    7304 2950 30
    
    Having a wall thickness exceeding 9.5 mm
    
    7304 2950 45
    
    Having an outside diameter exceeding 114.3 mm but less than 215.9 mm
    
    7304 2950 60
    
    Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm
    
    7304 2950 75
    
    Having an outside diameter exceeding 406.4 mm
    
    7304 2961
    
    Of other alloy steel
    
    Having an outside diameter not exceeding 114.3 mm:
    
    7304 2961 15
    
    Having a wall thickness not exceeding 9.5 mm
    
    7304 2961 30
    
    Having a wall thickness exceeding 9.5 mm
    
    7304 2961 45
    
    Having an outside diameter exceeding 114.3 mm but less than 215.9 mm
    
    7304 2961 60
    
    Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm
    
    7304 2961 75
    
    Having an outside diameter exceeding 406.4 mm
Other, of circular cross section, of iron or nonalloy steel:
- 7304 31
  
  Cold-drawn or cold-rolled (cold-reduced):
  - 7304 3130 00
    
    Hollow bars
  - 7304 3160
    
    Other
    
    7304 3160 10
    
    Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
    
    7304 3160 50
    
    Other
- 7304 3900
  
  Other
  - Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters:
    
    7304 3900 02
    
    Having an outside diameter less than 38.1 mm
    
    7304 3900 04
    
    Having an outside diameter of 38.1 mm or more but less than 190.5 mm
    
    7304 3900 06
    
    Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm
    
    7304 3900 08
    
    Having an outside diameter exceeding 285.8 mm
  - Other:
    
    7304 3900 16
    
    Galvanized, having an outside diameter not exceeding 114.3 mm
    
    Other:
    
    7304 3900 20
    
    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:
    
    7304 3900 24
    
    Having a wall thickness less than 6.4 mm
    
    7304 3900 28
    
    Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm
    
    7304 3900 32
    
    Having a wall thickness exceeding 12.7 mm
    
    Having an outside diameter exceeding 114.3 mm but less than 190.5 mm:
    
    7304 3900 36
    
    Having a wall thickness less than 12.7 mm
    
    7304 3900 40
    
    Having a wall thickness of 12.7 mm or more but less than 19 mm
    
    7304 3900 44
    
    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:
    
    7304 3900 48
    
    Having a wall thickness less than 12.7 mm
    
    7304 3900 52
    
    Having a wall thickness of 12.7 mm or more but less than 19 mm
    
    7304 3900 56
    
    Having a wall thickness of 19 mm or more
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm:
    
    7304 3900 62
    
    Having a wall thickness less than 12.7 mm
    
    7304 3900 68
    
    Having a wall thickness of 12.7 mm or more but less than 19 mm
    
    7304 3900 72
    
    Having a wall thickness of 19 mm or more
    
    Having an outside diameter exceeding 406.4 mm:
    
    7304 3900 76
    
    Having a wall thickness less than 19 mm
    
    7304 3900 80
    
    Having a wall thickness of 19 mm or more
Other, of circular cross section, of stainless steel:
- 7304 41
  
  Cold-drawn or cold-rolled (cold-reduced):
  - 7304 4130
    
    Of an external diameter of less than 19 mm
    
    7304 4130 05
    
    Of high-nickel alloy steel
    
    Other:
    
    7304 4130 15
    
    Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
    
    7304 4130 45
    
    Other
  - 7304 4160
    
    Other
    
    7304 4160 05
    
    Of high-nickel alloy steel
    
    Other:
    
    7304 4160 15
    
    Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
    
    7304 4160 45
    
    Other
- 7304 4900
  
  Other
  - 7304 4900 05
    
    Of high-nickel alloy steel
  - Other:
    
    7304 4900 15
    
    Hollow bars
    
    Other:
    
    7304 4900 45
    
    Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
    
    7304 4900 60
    
    Other
Other, of circular cross section, of other alloy steel:
- 7304 51
  
  Cold-drawn or cold-rolled (cold-reduced):
  - 7304 5110 00
    
    Suitable for use in the manufacture of ball or roller bearings
  - 7304 5150
    
    Other
    
    7304 5150 05
    
    Of high-nickel alloy steel
    
    Other:
    
    Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters:
    
    7304 5150 15
    
    Of heat-resisting steel
    
    7304 5150 45
    
    Other
    
    7304 5150 60
    
    Other
- 7304 59
  
  Other:
  - 7304 5910 00
    
    Suitable for use in the manufacture of ball or roller bearings
  - Other:
    
    7304 5920
    
    Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
    
    7304 5920 30
    
    Of heat-resisting steel
    
    Other:
    
    7304 5920 40
    
    Having an outside diameter less than 38.1 mm
    
    7304 5920 45
    
    Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm
    
    7304 5920 55
    
    Having an outside diameter exceeding 114.3 mm but less than 190.5 mm
    
    7304 5920 60
    
    Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm
    
    7304 5920 70
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
    
    7304 5920 80
    
    Having an outside diameter exceeding 406.4 mm
    
    Other:
    
    7304 5960 00
    
    Of heat-resisting steel
    
    7304 5980
    
    Other
    
    7304 5980 10
    
    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:
    
    7304 5980 15
    
    Having a wall thickness less than 6.4 mm
    
    7304 5980 20
    
    Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm
    
    7304 5980 25
    
    Having a wall thickness exceeding 12.7 mm
    
    Having an outside diameter exceeding 114.3 mm but less than 190.5 mm:
    
    7304 5980 30
    
    Having a wall thickness less than 12.7 mm
    
    7304 5980 35
    
    Having a wall thickness of 12.7 mm or more but less than 19 mm
    
    7304 5980 40
    
    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:
    
    7304 5980 45
    
    Having a wall thickness less than 12.7 mm
    
    7304 5980 50
    
    Having a wall thickness of 12.7 mm or more but less than 19 mm
    
    7304 5980 55
    
    Having a wall thickness of 19 mm or more
    
    Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm:
    
    7304 5980 60
    
    Having a wall thickness less than 12.7 mm
    
    7304 5980 65
    
    Having a wall thickness of 12.7 mm or more but less than 19 mm
    
    7304 5980 70
    
    Having a wall thickness of 19 mm or more
    
    7304 5980 80
    
    Having an outside diameter exceeding 406.4 mm
7304 90

Other:
- Having a wall thickness of 4 mm or more:
  - 7304 9010 00
    
    Of iron or nonalloy steel
  - 7304 9030 00
    
    Of alloy steel
- Having a wall thickness of less than 4 mm:
  - 7304 9050 00
    
    Of iron or nonalloy steel
  - 7304 9070 00
    
    Of alloy steel

Overview

This HTS category, 7304, encompasses seamless tubes, pipes, and hollow profiles manufactured from iron (excluding cast iron) or steel. These items are characterized by their hollow cross-section and the absence of welded seams, a crucial distinction for classification. The primary function of these goods is fluid conveyance or structural application, and they are broadly defined by their material composition of ferrous metals.

While this category focuses specifically on seamless iron and steel tubular products, it is important to distinguish it from other HTS chapters that may cover related ferrous metal articles. For instance, Chapter 72 deals with raw iron and steel, while Chapter 73 also includes a wide array of other articles of iron or steel such as bars, rods, angles, shapes, sections, wire, and fabricated structural components which are not hollow profiles. Within Chapter 73, other headings might cover welded pipes and tubes or cast iron pipes, which are explicitly excluded from 7304.

The subcategories within 7304 provide further granularity based on the intended use and material composition. They differentiate between specific applications like line pipe for oil and gas, and casing, tubing, and drill pipe used in drilling operations. Further subdivisions are made based on the cross-sectional shape and the specific type of steel, categorizing products of circular cross-section into those made from non-alloy steel, stainless steel, and other alloy steels, before a residual "Other" category captures remaining items.

Go up to Chapter 73: Articles of iron or steel

7304 - Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel:

Sub-classifications

Overview

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