CBSA

Chapter 73Articles of iron or steel

The headings in this chapter of Canada's Customs Tariff. Each one opens on the numbers it contains.

Chapter 73 takes over from Chapter 72 the moment metal becomes an article: tubes, pipe fittings, structures, tanks, cables, fasteners, household goods. The line between the two chapters is the line between a material and an object.

The trap points upward. A steel article that is also a machine part belongs to Section XVI, not here: Note 2 to that Section prevails. Fasteners of 7318 are the exception and stay in Chapter 73 even when fitted to a machine.

26 headings

7301Sheet piling of iron or steel, whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or steel.
- 7301.10.00.00Sheet piling
- 7301.20.00Angles, shapes and sections
  - 7301.20.00.10Of a height not exceeding 635 mm
  - 7301.20.00.20Of a height exceeding 635 mm
7302Railway or tramway track construction material of iron or steel, the following: rails, check-rails and rack rails, switch blades, crossing frogs, point rods and other crossing pieces, sleepers (cross-ties), fish-plates, chairs, chair wedges, sole plates (base plates), rail clips, bedplates, ties and other material specialized for jointing or fixing rails.
- 7302.10.00Rails
  - 7302.10.00.1Heat treated:
    7302.10.00.11Of a weight not exceeding 57 kg/m
    7302.10.00.12Of a weight exceeding 57 kg/m but not exceeding 67 kg/m
    7302.10.00.13Of a weight exceeding 67 kg/m
  - 7302.10.00.2Not heat treated:
    7302.10.00.21Of a weight not exceeding 57 kg/m
    7302.10.00.22Of a weight exceeding 57 kg/m
- 7302.30Switch blades, crossing frogs, point rods and other crossing pieces
  - 7302.30.10.00For use with grooved or girder guard rail
  - 7302.30.90.00Other
- 7302.40.00.00Fish-plates and sole plates
- 7302.90.00.00Other
7303.00.00Tubes, pipes and hollow profiles, of cast iron.
- 7303.00.00.10Soil pipes
- 7303.00.00.20Pressure pipes
- 7303.00.00.90Other
7304Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel.
- 7304.1Line pipe of a kind used for oil or gas pipelines:
  - 7304.11.00.00Of stainless steel
  - 7304.19.00Other
    7304.19.00.1Of an external diameter not exceeding 60.3 mm:
    7304.19.00.13Of an A.P.I. grade not exceeding X-52
    7304.19.00.14Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7304.19.00.15Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7304.19.00.16Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7304.19.00.19Other
    7304.19.00.2Of an external diameter exceeding 60.3 mm but not exceeding 219.1 mm:
    7304.19.00.23Of an A.P.I. grade not exceeding X-52
    7304.19.00.24Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7304.19.00.25Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7304.19.00.26Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7304.19.00.29Other
    7304.19.00.6Of an external diameter exceeding 219.1 mm but not exceeding 355.6 mm:
    7304.19.00.61Of an A.P.I. grade not exceeding X-52
    7304.19.00.62Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7304.19.00.63Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7304.19.00.64Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7304.19.00.69Other
    7304.19.00.7Of an external diameter exceeding 355.6 mm but not exceeding 610 mm:
    7304.19.00.71Of an A.P.I. grade not exceeding X-52
    7304.19.00.72Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7304.19.00.73Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7304.19.00.74Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7304.19.00.79Other
    7304.19.00.8Of an external diameter exceeding 610 mm:
    7304.19.00.81Of an A.P.I. grade not exceeding X-52
    7304.19.00.82Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7304.19.00.83Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7304.19.00.84Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7304.19.00.89Other
- 7304.2Casing, tubing and drill pipe, of a kind used in drilling for oil or gas:
  - 7304.22.00.00Drill pipe of stainless steel
  - 7304.23.00Other drill pipe
    7304.23.00.10Of iron or non-alloy steel
    7304.23.00.20Of alloy steel
  - 7304.24.00.00Other, of stainless steel
  - 7304.29.00Other
    7304.29.00.1Casing, of an external diameter of 114.3mm or more but not exceeding 177.8mm:
    7304.29.00.12Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.13Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.14Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.15Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.16Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.17Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.19Other
    7304.29.00.2Casing, of an external diameter exceeding 177.8 mm but not exceeding 298.5 mm:
    7304.29.00.22Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.23Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.24Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.25Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.26Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.27Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.29Other
    7304.29.00.3Casing, of an external diameter exceeding 298.5 mm:
    7304.29.00.32Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.33Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.34Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.35Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.36Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.37Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.39Other
    7304.29.00.4Tubing, of an external diameter not exceeding 60.2 mm:
    7304.29.00.42Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.43Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.44Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.45Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.46Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.47Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.49Other
    7304.29.00.5Tubing, of an external diameter of 60.3 mm:
    7304.29.00.52Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.53Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.54Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.55Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.56Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.57Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.59Other
    7304.29.00.6Tubing, of an external diameter exceeding 60.3 mm but not exceeding 73 mm:
    7304.29.00.62Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.63Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.64Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.65Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.66Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.67Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.69Other
    7304.29.00.7Tubing, of an external diameter exceeding 73 mm:
    7304.29.00.72Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.73Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.74Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7304.29.00.75Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.76Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.77Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7304.29.00.79Other
- 7304.3Other, of circular cross-section, of iron or non-alloy steel:
  - 7304.31.00Cold-drawn or cold-rolled (cold-reduced)
    7304.31.00.10Mechanical tubes and pipes
    7304.31.00.90Other
  - 7304.39.00Other
    7304.39.00.1Standard pipes, of an external diameter not exceeding 60.3 mm:
    7304.39.00.11Of an ASTM grade A106 or equivalent
    7304.39.00.12Of an ASTM grade A333 or equivalent
    7304.39.00.19Other
    7304.39.00.2Standard pipes, of an external diameter exceeding 60.3 mm but not exceeding 219.1 mm:
    7304.39.00.21Of an ASTM grade A106 or equivalent
    7304.39.00.22Of an ASTM grade A333 or equivalent
    7304.39.00.29Other
    7304.39.00.3Standard pipes, of an external diameter exceeding 219.1 mm but not exceeding 355.6 mm:
    7304.39.00.31Of an ASTM grade A106 or equivalent
    7304.39.00.32Of an ASTM grade A333 or equivalent
    7304.39.00.39Other
    7304.39.00.4Standard pipes, of an external diameter exceeding 355.6 mm but not exceeding 610 mm:
    7304.39.00.41Of an ASTM grade A106 or equivalent
    7304.39.00.42Of an ASTM grade A333 or equivalent
    7304.39.00.49Other
    7304.39.00.5Standard pipes, of an external diameter exceeding 610 mm:
    7304.39.00.51Of an ASTM grade A106 or equivalent
    7304.39.00.52Of an ASTM grade A333 or equivalent
    7304.39.00.59Other
    7304.39.00.60Tubes and pipes, for boilers
    7304.39.00.70Mechanical tubes and pipes
    7304.39.00.90Other
- 7304.4Other, of circular cross-section, of stainless steel:
  - 7304.41.00Cold-drawn or cold-rolled (cold-reduced)
    7304.41.00.10Of an external diameter of less than 19 mm
    7304.41.00.90Other
  - 7304.49.00Other
    7304.49.00.40Hollow profiles
    7304.49.00.90Other
- 7304.5Other, of circular cross-section, of other alloy steel:
  - 7304.51.00.00Cold-drawn or cold-rolled (cold-reduced)
  - 7304.59.00Other
    7304.59.00.1Standard pipes, of an external diameter not exceeding 60.3 mm:
    7304.59.00.11Of an ASTM grade A335 P5
    7304.59.00.12Of an ASTM grade A335 P9
    7304.59.00.13Of an ASTM grade A335 P11
    7304.59.00.14Of an ASTM grade A335 P22
    7304.59.00.15Of an ASTM grade A335 P91
    7304.59.00.16Of an ASTM grade A335 P92
    7304.59.00.19Other
    7304.59.00.2Standard pipes, of an external diameter exceeding 60.3 mm but not exceeding 219.1 mm:
    7304.59.00.21Of an ASTM grade A335 P5
    7304.59.00.22Of an ASTM grade A335 P9
    7304.59.00.23Of an ASTM grade A335 P11
    7304.59.00.24Of an ASTM grade A335 P22
    7304.59.00.25Of an ASTM grade A335 P91
    7304.59.00.26Of an ASTM grade A335 P92
    7304.59.00.29Other
    7304.59.00.3Standard pipes, of an external diameter exceeding 219.1 mm but not exceeding 355.6 mm:
    7304.59.00.31Of an ASTM grade A335 P5
    7304.59.00.32Of an ASTM grade A335 P9
    7304.59.00.33Of an ASTM grade A335 P11
    7304.59.00.34Of an ASTM grade A335 P22
    7304.59.00.35Of an ASTM grade A335 P91
    7304.59.00.36Of an ASTM grade A335 P92
    7304.59.00.39Other
    7304.59.00.4Standard pipes, of an external diameter exceeding 355.6 mm but not exceeding 610 mm:
    7304.59.00.41Of an ASTM grade A335 P5
    7304.59.00.42Of an ASTM grade A335 P9
    7304.59.00.43Of an ASTM grade A335 P11
    7304.59.00.44Of an ASTM grade A335 P22
    7304.59.00.45Of an ASTM grade A335 P91
    7304.59.00.46Of an ASTM grade A335 P92
    7304.59.00.49Other
    7304.59.00.5Standard pipes, of an external diameter exceeding 610 mm:
    7304.59.00.51Of an ASTM grade A335 P5
    7304.59.00.52Of an ASTM grade A335 P9
    7304.59.00.53Of an ASTM grade A335 P11
    7304.59.00.54Of an ASTM grade A335 P22
    7304.59.00.55Of an ASTM grade A335 P91
    7304.59.00.56Of an ASTM grade A335 P92
    7304.59.00.59Other
    7304.59.00.60Mechanical tubes and pipes
    7304.59.00.90Other
- 7304.90.00Other
  - 7304.90.00.10Of iron or non-alloy steel
  - 7304.90.00.20Of alloy steel
7305Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross-sections, the external diameter of which exceeds 406.4 mm, of iron or steel.
- 7305.1Line pipe of a kind used for oil or gas pipelines:
  - 7305.11.00Longitudinally submerged arc welded
    7305.11.00.3Of an external diameter not exceeding 610 mm:
    7305.11.00.31Of an A.P.I. grade not exceeding X-52
    7305.11.00.32Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7305.11.00.33Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7305.11.00.34Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7305.11.00.39Other
    7305.11.00.4Of an external diameter exceeding 610 mm:
    7305.11.00.41Of an A.P.I. grade not exceeding X-52
    7305.11.00.42Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7305.11.00.43Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7305.11.00.44Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7305.11.00.49Other
  - 7305.12.00Other, longitudinally welded
    7305.12.00.3Of an external diameter not exceeding 509 mm:
    7305.12.00.31Of an A.P.I. grade not exceeding X-52
    7305.12.00.32Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7305.12.00.33Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7305.12.00.34Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7305.12.00.39Other
    7305.12.00.4Of an external diameter exceeding 509 mm:
    7305.12.00.41Of an A.P.I. grade not exceeding X-52
    7305.12.00.42Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7305.12.00.43Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7305.12.00.44Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7305.12.00.49Other
  - 7305.19.00Other
    7305.19.00.3Of an external diameter not exceeding 610 mm:
    7305.19.00.31Of an A.P.I. grade not exceeding X-52
    7305.19.00.32Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7305.19.00.33Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7305.19.00.34Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7305.19.00.39Other
    7305.19.00.4Of an external diameter exceeding 610 mm:
    7305.19.00.41Of an A.P.I. grade not exceeding X-52
    7305.19.00.42Of an A.P.I. grade greater than X-52 but not exceeding X-65
    7305.19.00.43Of an A.P.I. grade greater than X-65 but not exceeding X-70
    7305.19.00.44Of an A.P.I. grade greater than X-70 but not exceeding X-80
    7305.19.00.49Other
- 7305.20.00.00Casing of a kind used in drilling for oil or gas
- 7305.3Other, welded:
  - 7305.31.00Longitudinally welded
    7305.31.00.1Of iron or non-alloy steel:
    7305.31.00.11Standard pipes
    7305.31.00.19Other
    7305.31.00.20Of alloy steel
  - 7305.39.00Other
    7305.39.00.20Of iron or non-alloy steel
    7305.39.00.30Of alloy steel
- 7305.90.00Other
  - 7305.90.00.10Of iron or non-alloy steel
  - 7305.90.00.20Of alloy steel
7306Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel.
- 7306.1Line pipe of a kind used for oil or gas pipelines:
  - 7306.11.00.00Welded, of stainless steel
  - 7306.19.00Other
    7306.19.00.10Of an A.P.I. grade not exceeding X-52
    7306.19.00.90Other
- 7306.2Casing and tubing of a kind used in drilling for oil or gas:
  - 7306.21.00.00Welded, of stainless steel
  - 7306.29.00Other
    7306.29.00.1Casing, of an external diameter of 114.3mm or more but not exceeding 177.8mm:
    7306.29.00.12Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.13Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.14Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.15Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.16Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.17Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.19Other
    7306.29.00.2Casing, of an external diameter exceeding 177.8 mm but not exceeding 298.5 mm:
    7306.29.00.22Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.23Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.24Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.25Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.26Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.27Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.29Other
    7306.29.00.3Casing, of an external diameter exceeding 298.5 mm:
    7306.29.00.32Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.33Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.34Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.35Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.36Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.37Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.39Other
    7306.29.00.4Tubing, of an external diameter not exceeding 60.2 mm:
    7306.29.00.42Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.43Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.44Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.45Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.46Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.47Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.49Other
    7306.29.00.5Tubing, of an external diameter of 60.3 mm:
    7306.29.00.52Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.53Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.54Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.55Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.56Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.57Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.59Other
    7306.29.00.6Tubing, of an external diameter exceeding 60.3 mm but not exceeding 73 mm:
    7306.29.00.62Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.63Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.64Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.65Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.66Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.67Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.69Other
    7306.29.00.7Tubing, of an external diameter exceeding 73 mm:
    7306.29.00.72Plain end, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.73Threaded and coupled to A.P.I. specifications, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.74Premium or semi-premium threaded and coupled, of an A.P.I. grade H-40, J-55, K-55 or equivalent proprietary specification
    7306.29.00.75Plain end, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.76Threaded and coupled to A.P.I. specifications, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.77Premium or semi-premium threaded and coupled, of an A.P.I. grade N80, L80, P110 or equivalent proprietary specification
    7306.29.00.79Other
- 7306.30.00Other, welded, of circular cross-section, of iron or non-alloy steel
  - 7306.30.00.4Of an external diameter not exceeding 60.325 mm:
    7306.30.00.41Structural tubing, of ASTM A500, ASTM A513, ASTM A1085, CSA G40.21 or equivalent specification
    7306.30.00.42Piling pipe, of ASTM A252 or equivalent specification
    7306.30.00.43Electrical metallic tubing, of UL 797 or equivalent specification
    7306.30.00.44Galvanized, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.45Galvanized, other
    7306.30.00.46Bare or lacquered , of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.47Other, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.49Other
  - 7306.30.00.5Of an external diameter of greater than 60.325 mm but not exceeding 168.28 mm:
    7306.30.00.51Structural tubing, of ASTM A500, ASTM A513, ASTM A1085, CSA G40.21 or equivalent specification
    7306.30.00.52Piling pipe, of ASTM A252 or equivalent specification
    7306.30.00.53Electrical metallic tubing, of UL 797 or equivalent specification
    7306.30.00.54Galvanized, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.55Galvanized, other
    7306.30.00.56Bare or lacquered , of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.57Other, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.59Other
  - 7306.30.00.6Of an external diameter of greater than 168.28 mm but not exceeding 273.05 mm:
    7306.30.00.61Structural tubing, of ASTM A500, ASTM A513, ASTM A1085, CSA G40.21 or equivalent specification
    7306.30.00.62Piling pipe, of ASTM A252 or equivalent specification
    7306.30.00.63Electrical metallic tubing, of UL 797 or equivalent specification
    7306.30.00.64Galvanized, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.65Galvanized, other
    7306.30.00.66Bare or lacquered , of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.67Other, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.69Other
  - 7306.30.00.7Of an external diameter of greater than 273.05 mm but not exceeding 406.4 mm:
    7306.30.00.71Structural tubing, of ASTM A500, ASTM A513, ASTM A1085, CSA G40.21 or equivalent specification
    7306.30.00.72Piling pipe, of ASTM A252 or equivalent specification
    7306.30.00.73Electrical metallic tubing, of UL 797 or equivalent specification
    7306.30.00.74Galvanized, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.75Galvanized, other
    7306.30.00.76Bare or lacquered , of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.77Other, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.79Other
  - 7306.30.00.8Of an external diameter greater than 406.4 mm:
    7306.30.00.81Structural tubing, of ASTM A500, ASTM A513, ASTM A1085, CSA G40.21 or equivalent specification
    7306.30.00.82Piling pipe, of ASTM A252 or equivalent specification
    7306.30.00.83Electrical metallic tubing, of UL 797 or equivalent specification
    7306.30.00.84Galvanized, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.85Galvanized, other
    7306.30.00.86Bare or lacquered , of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.87Other, of ASTM A53 A and B, ASTM A135, ASTM A795, ASTM A589, AWWA C200-97 or equivalent specification
    7306.30.00.89Other
- 7306.40.00Other, welded, of circular cross-section, of stainless steel
  - 7306.40.00.10Of an external diameter not exceeding 25.3 mm
  - 7306.40.00.20Of an external diameter exceeding 25.3 mm but not exceeding 114.9 mm
  - 7306.40.00.30Of an external diameter exceeding 114.9 mm
- 7306.50.00.00Other, welded, of circular cross-section, of other alloy steel
- 7306.6Other, welded, of non-circular cross-section:
  - 7306.61.00Of square or rectangular cross-section
    7306.61.00.3Of an external periphery not exceeding 812.8 mm
    7306.61.00.31Galvanized
    7306.61.00.39Other
    7306.61.00.4Of an external periphery exceeding 812.8 mm
    7306.61.00.41Galvanized
    7306.61.00.49Other
  - 7306.69.00Of other non-circular cross-section
    7306.69.00.3Of an external periphery not exceeding 812.8 mm
    7306.69.00.31Galvanized
    7306.69.00.39Other
    7306.69.00.4Of an external periphery exceeding 812.8 mm
    7306.69.00.41Galvanized
    7306.69.00.49Other
- 7306.90.00Other
  - 7306.90.00.10Of iron or non-alloy steel
  - 7306.90.00.20Of alloy steel
7307Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel.
- 7307.1Cast fittings:
  - 7307.11.00.00Of non-malleable cast iron
  - 7307.19.00Other
    7307.19.00.10Unions
    7307.19.00.90Other
- 7307.2Other, of stainless steel:
  - 7307.21.00.00Flanges
  - 7307.22.00Threaded elbows, bends and sleeves
    7307.22.00.10Sleeves
    7307.22.00.90Other
  - 7307.23.00.00Butt welding fittings
  - 7307.29Other
    7307.29.10.00To be employed in pneumatically breaking down the working face of a mine in mining, quarrying or developing mineral deposits
    7307.29.20.00For installation between the wellhead assembly or surface oil pumping unit and the field marketing valve at oil or natural gas wells
    7307.29.9Other:
    7307.29.91.00Not further worked than forged or bent to shape
    7307.29.99.00Other
- 7307.9Other:
  - 7307.91.00Flanges
    7307.91.00.10Of iron or non-alloy steel
    7307.91.00.20Of alloy steel
  - 7307.92.00Threaded elbows, bends and sleeves
    7307.92.00.10Of iron or non-alloy steel
    7307.92.00.20Of alloy steel, other than stainless steel
  - 7307.93.00Butt welding fittings
    7307.93.00.10Of iron or non-alloy steel
    7307.93.00.20Of alloy steel, other than stainless steel
  - 7307.99.00Other
    7307.99.00.1Of iron or non-alloy steel:
    7307.99.00.11Couplings
    7307.99.00.19Other
    7307.99.00.2Of alloy steel, other than stainless steel:
    7307.99.00.21Couplings
    7307.99.00.29Other
7308Structures (excluding prefabricated buildings of heading 94.06) and parts of structures (for example, bridges and bridge-sections, lock-gates, towers, lattice masts, roofs, roofing frame-works, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns), of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel.
- 7308.10.00.00Bridges and bridge-sections
- 7308.20.00.00Towers and lattice masts
- 7308.30.00Doors, windows and their frames and thresholds for doors
  - 7308.30.00.10Sash, casement or frame sections, not punched, drilled or further manufactured, whether or not coated, and similar material formed from hot- or cold-rolled strip, whether or not coated, for use in the manufacture of window sash, casements or frames
  - 7308.30.00.2Doors and their frames:
    7308.30.00.21Sliding
    7308.30.00.22Domestic garage
    7308.30.00.28Other roll-up
    7308.30.00.29Other
  - 7308.30.00.30Windows and their frames
  - 7308.30.00.40Thresholds for doors
- 7308.40.00.00Equipment for scaffolding, shuttering, propping or pit-propping
- 7308.90.00Other
  - 7308.90.00.10Ceilings, including frames for suspended ceilings
  - 7308.90.00.20Roofing
  - 7308.90.00.30Siding, including soffit or fascia
  - 7308.90.00.40Assembled fences, including barriers or crossing gates
  - 7308.90.00.50Flooring; Roof drainage equipment
  - 7308.90.00.6Storage racking systems, platforms, towers including parts, but excluding wire mesh decking, with vertical load bearing members that are at least 50 mm wide, assembled to any extent, or unassembled:
    7308.90.00.60—
    7308.90.00.61Pallet racking, of hot-rolled structural steel
    7308.90.00.62Pallet racking, of cold-formed steel, roll or brake formed
    7308.90.00.63Cantilever racking, of hot-rolled structural steel
    7308.90.00.64Cantilever racking, of cold-formed steel, roll or brake formed
    7308.90.00.68Other, of hot-rolled structural steel
    7308.90.00.69Other, of cold-formed steel, roll or brake formed
  - 7308.90.00.70Columns, pillars, posts, beams, girders and similar structural units
  - 7308.90.00.9Other:
    7308.90.00.95Grills, air diffusers or ducts
    7308.90.00.96Other architectural or ornamental work
    7308.90.00.99Other
7309.00.00Reservoirs, tanks, vats and similar containers for any material (other than compressed or liquefied gas), of iron or steel, of a capacity exceeding 300 litres, whether or not lined or heat-insulated, but not fitted with mechanical or thermal equipment.
- 7309.00.00.70Tanks
- 7309.00.00.90Other
7310Tanks, casks, drums, cans, boxes and similar containers, for any material (other than compressed or liquefied gas), of iron or steel, of a capacity not exceeding 300 litres, whether or not lined or heat-insulated, but not fitted with mechanical or thermal equipment.
- 7310.10.00Of a capacity of 50 litres or more
  - 7310.10.00.10Cans
  - 7310.10.00.20Tanks
  - 7310.10.00.30Drums
  - 7310.10.00.90Other
- 7310.2Of a capacity of less than 50 litres:
  - 7310.21.00Cans which are to be closed by soldering or crimping
    7310.21.00.10For food
    7310.21.00.90Other
  - 7310.29.00Other
    7310.29.00.10Tanks or drums
    7310.29.00.20Cans
    7310.29.00.90Other
7311.00.00.00Containers for compressed or liquefied gas, of iron or steel.
7312Stranded wire, ropes, cables, plaited bands, slings and the like, of iron or steel, not electrically insulated.
- 7312.10.00Stranded wire, ropes and cables
  - 7312.10.00.1Stranded wire, alloyed steel:
    7312.10.00.11Of a diameter not exceeding 5 mm
    7312.10.00.12Of a diameter exceeding 5 mm
  - 7312.10.00.2Stranded wire, non-alloyed steel:
    7312.10.00.21Of a diameter not exceeding 5 mm
    7312.10.00.22Of a diameter exceeding 5 mm
  - 7312.10.00.3Ropes and cables, containing not more than eight strands, new:
    7312.10.00.31Of a diameter not exceeding 25 mm
    7312.10.00.32Of a diameter exceeding 25 mm but not exceeding 50 mm
    7312.10.00.33Of a diameter exceeding 50 mm
  - 7312.10.00.4Ropes and cables, containing more than eight strands, new:
    7312.10.00.41Of a diameter not exceeding 25 mm
    7312.10.00.42Of a diameter exceeding 25 mm but not exceeding 50 mm
    7312.10.00.43Of a diameter exceeding 50 mm
  - 7312.10.00.50Ropes and cables, used
- 7312.90.00.00Other
7313.00.00.00Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or not, and loosely twisted double wire, of a kind used for fencing, of iron or steel.
7314Cloth (including endless bands), grill, netting and fencing, of iron or steel wire; expanded metal of iron or steel.
- 7314.1Woven cloth:
  - 7314.12.00.00Endless bands for machinery, of stainless steel
  - 7314.14.00.00Other woven cloth, of stainless steel
  - 7314.19.00.00Other
- 7314.20.00.00Grill, netting and fencing, welded at the intersection, of wire with a maximum cross-sectional dimension of 3 mm or more and having a mesh size of 100 cm² or more
- 7314.3Other grill, netting and fencing, welded at the intersection:
  - 7314.31.00.00Plated or coated with zinc
  - 7314.39.00.00Other
- 7314.4Other cloth, grill, netting and fencing:
  - 7314.41.00.00Plated or coated with zinc
  - 7314.42.00.00Coated with plastics
  - 7314.49.00.00Other
- 7314.50.00.00Expanded metal
7315Chain and parts thereof, of iron or steel.
- 7315.1Articulated link chain and parts thereof:
  - 7315.11.00.00Roller chain
  - 7315.12.00.00Other chain
  - 7315.19.00.00Parts
- 7315.20.00.00Skid chain
- 7315.8Other chain:
  - 7315.81.00.00Stud-link
  - 7315.82.00Other, welded link
    7315.82.00.10Of iron or non-alloy steel
    7315.82.00.20Of alloy steel
  - 7315.89.00.00Other
- 7315.90.00.00Other parts
7316.00Anchors, grapnels and parts thereof, of iron or steel.
- 7316.00.10.00Of a weight of 18 kg or more
- 7316.00.20.00Of a weight of less than 18 kg
7317.00.00.00Nails, tacks, drawing pins, corrugated nails, staples (other than those of heading 83.05) and similar articles, of iron or steel, whether or not with heads of other material, but excluding such articles with heads of copper.
7318Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel.
- 7318.1Threaded articles:
  - 7318.11.00.00Coach screws
  - 7318.12.00.00Other wood screws
  - 7318.13.00.00Screw hooks and screw rings
  - 7318.14.00.00Self-tapping screws
  - 7318.15.00Other screws and bolts, whether or not with their nuts or washers
    7318.15.00.10Screws
    7318.15.00.4Bolts:
    7318.15.00.42Hex head or machine
    7318.15.00.45Studs
    7318.15.00.49Other
  - 7318.16.00Nuts
    7318.16.00.10Lock
    7318.16.00.90Other
  - 7318.19.00.00Other
- 7318.2Non-threaded articles:
  - 7318.21.00.00Spring washers and other lock washers
  - 7318.22.00.00Other washers
  - 7318.23.00.00Rivets
  - 7318.24.00.00Cotters and cotter-pins
  - 7318.29.00.00Other
7319Sewing needles, knitting needles, bodkins, crochet hooks, embroidery stilettos and similar articles, for use in the hand, of iron or steel; safety pins and other pins of iron or steel, not elsewhere specified or included.
- 7319.40Safety pins and other pins
  - 7319.40.10.00Specially designed for marking systems
  - 7319.40.90.00Other
- 7319.90Other
  - 7319.90.10.00Sewing, darning or embroidery needles
  - 7319.90.90.00Other
7320Springs and leaves for springs, of iron or steel.
- 7320.10.00.00Leaf-springs and leaves therefor
- 7320.20.00Helical springs
  - 7320.20.00.10For furniture
  - 7320.20.00.20For motor vehicles
  - 7320.20.00.90Other
- 7320.90.00Other
  - 7320.90.00.20Of wire
  - 7320.90.00.90Other
7321Stoves, ranges, grates, cookers (including those with subsidiary boilers for central heating), barbecues, braziers, gas-rings, plate warmers and similar non-electric domestic appliances, and parts thereof, of iron or steel.
- 7321.1Cooking appliances and plate warmers:
  - 7321.11For gas fuel or for both gas and other fuels
    7321.11.10.00Non-portable stoves or ranges (including those specially designed for use on boats)
    7321.11.90Other
    7321.11.90.10Counter top units
    7321.11.90.30Grills
    7321.11.90.40Portable stoves or ranges
    7321.11.90.90Other
  - 7321.12.00.00For liquid fuel
  - 7321.19Other, including appliances for solid fuel
    7321.19.10.00Non-portable stoves or ranges (including those specially designed for use on boats)
    7321.19.90.00Other
- 7321.8Other appliances:
  - 7321.81.00.00For gas fuel or for both gas and other fuels
  - 7321.82.00.00For liquid fuel
  - 7321.89.00.00Other, including appliances for solid fuel
- 7321.90Parts
  - 7321.90.10Cast iron grilles, of a weight not exceeding 3 kg, not further worked than as cast, cut and ground, for use in the manufacture of finished grilles for non-industrial non-portable stoves or ranges, for gas fuel or for both gas or other fuels; For appliances, excluding cooking appliances and plate warmers; For cooking appliances and plate warmers for gas fuel or for both gas and other fuels, excluding non-portable stoves or ranges (including those specially designed for use on boats)
    7321.90.10.10For appliances, excluding cooking appliances and plate warmers
    7321.90.10.90Other
  - 7321.90.2For non-portable stoves or ranges (including those specially designed for use on boats), for gas fuel or for both gas or other fuels:
    7321.90.21.00Cooking chambers
    7321.90.22.00Top surface panels
    7321.90.23.00Door assemblies, incorporating at least two of the following: inner panel, outer panel, window, insulation
    7321.90.24.00Oven pilot burners, top burners of other than cast iron, oven burners and lighter cones, for use in the manufacture of ranges
    7321.90.29.00Other
  - 7321.90.90.00Other
7322Radiators for central heating, not electrically heated, and parts thereof, of iron or steel; air heaters and hot air distributors (including distributors which can also distribute fresh or conditioned air), not electrically heated, incorporating a motor-driven fan or blower, and parts thereof, of iron or steel.
- 7322.1Radiators and parts thereof:
  - 7322.11.00.00Of cast iron
  - 7322.19.00.00Other
- 7322.90Other
  - 7322.90.10For heating buildings
    7322.90.10.2Warm air furnaces and parts thereof:
    7322.90.10.21Gas
    7322.90.10.29Other
    7322.90.10.30Gas fired unit heaters, including parts
    7322.90.10.90Other
  - 7322.90.20.00Process air heaters; Switch heaters and sensing heads (hot air and oil fired), horizontal air curtains, for railway tracks
  - 7322.90.90.00Other
7323Table, kitchen or other household articles and parts thereof, of iron or steel; iron or steel wool; pot scourers and scouring or polishing pads, gloves and the like, of iron or steel.
- 7323.10.00.00Iron or steel wool; pot scourers and scouring or polishing pads, gloves and the like
- 7323.9Other:
  - 7323.91.00.00Of cast iron, not enamelled
  - 7323.92.00.00Of cast iron, enamelled
  - 7323.93Of stainless steel
    7323.93.10.00Parts for use in the manufacture of cookware
    7323.93.90Other
    7323.93.90.10Cooking utensils and kitchenware
    7323.93.90.90Other
  - 7323.94.00Of iron (other than cast iron) or steel, enamelled
    7323.94.00.10Cooking utensils
    7323.94.00.9Other:
    7323.94.00.91Subject to customs duty based on excise duty
    7323.94.00.99Other
  - 7323.99.00Other
    7323.99.00.10Gates for confining children or pets
    7323.99.00.90Other
7324Sanitary ware and parts thereof, of iron or steel.
- 7324.10.00Sinks and wash basins, of stainless steel
  - 7324.10.00.10Kitchen sinks
  - 7324.10.00.90Other
- 7324.2Baths:
  - 7324.21.00.00Of cast iron, whether or not enamelled
  - 7324.29Other
    7324.29.10.00Stampings and assemblies thereof, for use in the manufacture of bath tubs
    7324.29.90.00Other
- 7324.90.00.00Other, including parts
7325Other cast articles of iron or steel.
- 7325.10.00Of non-malleable cast iron
  - 7325.10.00.10In the rough
  - 7325.10.00.90Other
- 7325.9Other:
  - 7325.91.00Grinding balls and similar articles for mills
    7325.91.00.10Of cast iron
    7325.91.00.90Other
  - 7325.99Other
    7325.99.10.00The following, to be employed in the exploration, discovery, development, maintenance, testing, depletion or production of oil or natural gas wells or potash or rock salt deposits: Flanged casing heads; Screwed casing heads for surface casings of an external diameter exceeding 273 mm, or rated for service in working pressures exceeding 14 MPa W.O.G. (water, oil, gas)
    7325.99.9Other:
    7325.99.91.00In the rough
    7325.99.99.00Other
7326Other articles of iron or steel.
- 7326.1Forged or stamped, but not further worked:
  - 7326.11.00.00Grinding balls and similar articles for mills
  - 7326.19Other
    7326.19.10.00Flanged wellhead tubing heads and flanged casing head spools, in the rough, for use in the manufacture of wellhead tubing heads or casing head spools, rated for service in working pressures exceeding 14 MPa W.O.G. (water, oil, gas), to be employed in the exploration, discovery, development, maintenance, testing, depletion or production of oil or natural gas wells; Wick sustainers for use in the manufacture of candles
    7326.19.90.00Other
- 7326.20.00.00Articles of iron or steel wire
- 7326.90Other
  - 7326.90.10.00Couplings for sucker rods, pony rods or polished rods for oilfield related pumps; Fishing tools and parts thereof to be employed in the exploration, discovery, development, maintenance, testing, depletion or production of oil or natural gas wells or for drilling machinery employed in the exploration, discovery, development or operation of potash or rock salt deposits; For climbing or mountaineering; For keeping nets open and swivels, to be employed in commercial fishing or in the commercial harvesting of marine plants; For use in the manufacture of detectors for propane or other toxic fumes; For use in the manufacture of fire fighting vehicles; For use in the manufacture of goods of Section XVI or of Chapter 73, such goods being used in the recovery or production of crude oil from shales, oil-sands or tar-sands; For use in the manufacture or repair of engines or parts thereof for commercial fishing vessels; Forged steel clevis hooks and eye hooks for use in the manufacture of debris chutes; Identification bands for migratory birds; Pitless well heads and parts thereof; Reusable containers, specially designed to be employed in the transportation of motor vehicle components which are free of customs duties, presented with the goods therein; Seat post clamps and cable hangers for use in the manufacture of unicycles, bicycles or tricycles; Semi-elliptical heads, of an external diameter of either 609.6 mm or 762 mm, to specification ASTM A455, for use in air compressor tanks; Snap hooks of forged steel, zinc plated, 12.5 cm to 23 cm in length, for use in the manufacture of debris chutes and chute hoists; Steel stanchions for confining livestock either in pens or individually; The following to be employed in the exploration, discovery, development, maintenance, testing, depletion or production of oil or natural gas wells or potash or rock salt deposits: Flanged casing heads; Screwed casing heads for surface casings of an external diameter exceeding 273 mm, or rated for service in working pressures exceeding 14 MPa W.O.G. (water, oil, gas); Well packers and parts thereof; To be employed in the processing, storing or insemination of animal semen; Tracks for use in the manufacture of skid steer loaders; Vacuum evaporator masks, of stainless steel, having a 90% front etch and 10% back etch, for the production of photo cells; Wick sustainers for use in the manufacture of candles
  - 7326.90.90Other
    7326.90.90.10Articles of tinplate
    7326.90.90.20Ladders
    7326.90.90.30Hangers and similar supports, for tubes and pipes
    7326.90.90.50Containers, of a kind normally carried on the person, in the pocket or in the handbag
    7326.90.90.90Other

Every number opens on the lines beneath it, down to the ten-digit classification number.