24.20: Tubes, pipes, hollow profiles and related fittings, of steel
C
24
24.2
Children
24.20.1: Tubes, pipes and hollow profiles, seamless, of steel
24.20.2: Tubes and pipes, welded, of circular cross-section, of an external diameter of > 406,4 mm, of steel
24.20.3: Tubes and pipes, of an external diameter of ≤ 406,4 mm, welded, of steel
24.20.4: Tube or pipe fittings of steel, not cast
24.20.9: Sub-contracted operations as part of manufacturing of tubes, pipes, hollow profiles and related fittings, of steel
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