
HOT FINISHED STRUCTURAL HOLLOW SECTIONS OF NON-ALLOY AND FINE GRAIN STEELS - PART 2: TOLERANCES, DIMENSIONS AND SECTIONAL PROPERTIES
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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HOT FINISHED STRUCTURAL HOLLOW SECTIONS OF NON-ALLOY AND FINE GRAIN STEELS - PART 2: TOLERANCES, DIMENSIONS AND SECTIONAL PROPERTIES
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻