
STEEL TUBES FOR PRECISION APPLICATIONS - TECHNICAL DELIVERY CONDITIONS - PART 5: WELDED COLD SIZED SQUARE AND RECTANGULAR TUBES
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
STEEL TUBES FOR PRECISION APPLICATIONS - TECHNICAL DELIVERY CONDITIONS - PART 5: WELDED COLD SIZED SQUARE AND RECTANGULAR TUBES
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频