DIN 28137-1 - DRAFT
DIN 28137-1 - DRAFT Draft Document - Mounting flanges for agitation units - Part 1: For vessels of steel
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/2013
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/2013