International Institute of Welding (IIW)
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The International Institute of Welding (IIW) is an international association focused on the exchange of knowledge in the field of welding and allied technologies. IIW is a not-for-profit organization, and our members are the associations representing the sectors of welding and allied processes in their countries.

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IIW 2025 78th IIW Annual Assembly and International Conference in Welding and Joining 6/22/2025 - 6/27/2025 IIW 2026 79th IIW Annual Assembly and International Conference in Welding and Joining Dates: TBD

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