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RELATED PARTY TRANSACTIONS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [line items]
Key management personnel compensation	$ 18,137	$ 13,736
Key management personnel compensation (in shares)	1,194,190
Key management personnel compensation, share-based payment	$ 6,276	$ 4,289
Techint Holdings S.à.r.l | Entities with joint control or significant influence over entity
Disclosure of transactions between related parties [line items]
Percentage of Company shares owned	62.02%
Tenaris Investments S.a.r.l. | Entities with joint control or significant influence over entity
Disclosure of transactions between related parties [line items]
Percentage of Company shares owned	11.46%

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The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

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The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]]

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