
Qualification testing of welders for underwater welding Part 1: Hyperbaric wet welding (ISO 15618-1:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Qualification testing of welders for underwater welding Part 1: Hyperbaric wet welding (ISO 15618-1:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频