DIN 6647-2
DIN 6647-2 Means of packaging - Cylindrical beverage containers - Part 2: Allowable operating pressure up to 7 bar, nominal volume up to 50 litres
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/2006
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/2006