
HOT FINISHED STRUCTURAL STEEL HOLLOW SECTIONS - PART 3: TOLERANCES, DIMENSIONS AND SECTIONAL PROPERTIES
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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HOT FINISHED STRUCTURAL STEEL HOLLOW SECTIONS - PART 3: TOLERANCES, DIMENSIONS AND SECTIONAL PROPERTIES
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频