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Note 28 - Cancellation of title deed in Saudi Steel Pipe Company (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) m² | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of geographical areas [line items] |  |  |  |
Proportion of ownership interest in subsidiary |  | 50.00% |  |
Saudi Arabia | SAUDI STEEL PIPE CO. and subsidiaries [Member] |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |
Area of land (in square meters) | m² |  | 811,284 |  |
Proportion of ownership interest in subsidiary | [1],[2] | 47.79% | 48.00% | 48.00%
Land plots, carrying value | $ |  | $ 56.2 |  |
[1] | (*) All percentages rounded.
[2] | Saudi Steel Pipe Company is a public company listed in the Saudi Arabian Stock Exchange (Tadā wul), Tenaris holds 47.79% and has the right to nominate the majority of the members of the board of directors, therefore Tenaris has control over SSPC. Since May, 2023, Saudi Steel Pipe Co. holds 57.3% of Global Pipe Company, therefore Tenaris has control over G lobal P ipe C ompany.

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