| 7304.39.00 | 10 | Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel. - Other, of circular cross-section, of iron or non-alloy steel: - Other - For blast furnaces for smelting iron ore; For use in the manufacture of cylinders for calendering, supercalendering or embossing paper or textiles; For use in the manufacture of drill pipe, casing or tubing, or fittings, couplings, thread protectors or nipples therefor, for natural gas or oil wells; For use in the manufacture of separators or treaters (water, oil, gas), for installation between the wellhead assembly or surface oil pumping unit and the field marketing valve at oil or natural gas wells; Tubes and pipes, centrifugally cast, with plain ends, having a wall thickness of 15.875 mm or more but not exceeding 63.5 mm, for use in the manufacture of rolls for paper-making machinery | KGM | | |
| 7305.31.00 | 10 | Other 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. - Other, welded: - Longitudinally welded - 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; Of iron or non-alloy steel, for use in the manufacture of separators or treaters (water, oil, gas), for installation between the wellhead assembly or surface oil pumping unit and the field marketing valve at oil or natural gas wells; Tubes and pipes, electric resistance welded, with an external diameter of 457.2 mm or more but not exceeding 609.6 mm, having a wall thickness of 9.525 mm or more but not exceeding 12.7 mm, containing, by weight, 0.37% or more but not exceeding 0.48% of carbon and 0.6% or more but not exceeding 1.2% of manganese, for use in the manufacture of induction hardened abrasion resistant tubes or pipes | KGM | | |
| 7307.29.20 | 00 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel. - Other, of stainless steel: - Other - For installation between the wellhead assembly or surface oil pumping unit and the field marketing valve at oil or natural gas wells | KGM | 4.5% | CCCT, LDCT |
| 7307.99.00 | 10 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel. - Other: - Other - Of alloy steel, other than stainless steel, further worked than forged or bent to shape, for installation between the wellhead assembly or surface oil pumping unit and the field marketing valve at oil or natural gas wells | KGM | | |
| 7326.19.10 | 00 | Other articles of iron or steel. - Forged or stamped, but not further worked: - Other - Flanged 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 | KGM | Free | CCCT, LDCT |
Harmonized Tariff Schedule of the Canada inquiry: aircraft+parts
