DIN 28117/A1 - DRAFT
DIN 28117/A1 - DRAFT Draft Document - Block flanges for process apparatus - Connecting dimensions PN 10 to PN 40
Amendment by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2014
Amendment by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2014