7304.59.00 | 10 | Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel. - Other, of circular cross-section, of other alloy steel: - Other - 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;
To be employed in pneumatically breaking down the working face of a mine in mining, quarrying or developing mineral deposits;
Tubes and pipes, of an external diameter of 177.8 mm and of a wall thickness of 4.4 mm or 4.9 mm, for use in the manufacture of high pressure cylinders for the industrial gas market;
Tubes and pipes, to specification ASTM A-519, Grade 8620, AISI 52100 or ASTM 485, stress relieved and annealed, of an external diameter of 130 mm or more but not exceeding 440 mm and of a wall thickness of 28 mm or more but not exceeding 80 mm, for use in the manufacture of pellet rolls for animal feed or wood chip pellet mills;
Tubes and pipes, of a diameter of 8 cm or more but not exceeding 13 cm, for use in the manufacture of oil well perforating guns | KGM | | |