
HOT ROLLED SQUARE STEEL BARS FOR GENERAL PURPOSES - DIMENSIONS AND TOLERANCES ON SHAPE AND DIMENSIONS
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
HOT ROLLED SQUARE STEEL BARS FOR GENERAL PURPOSES - DIMENSIONS AND TOLERANCES ON SHAPE AND DIMENSIONS
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频