
Hot Rolled Steel Channels - Part 1: Taper Flange Steel Channels - Dimensions, Masses And Sectional Properties
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Hot Rolled Steel Channels - Part 1: Taper Flange Steel Channels - Dimensions, Masses And Sectional Properties
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻