DIN 1025-1
DIN 1025-1 Hot rolled I-sections - Part 1: Narrow flange I-sections, I-serie - Dimensions, masses, sectional properties
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/2009
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/2009