
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification Part 002: Bar and section; German and English version EN 4700-002:2016
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification Part 002: Bar and section; German and English version EN 4700-002:2016
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频