NA 119
DIN Standards Committee Water Practice
Technical rule
[CURRENT]
DVGW W 551-6
DVGW W 551-6
Hygiene in Potable Water Installations - Part 6: Rehabilitation - Technical and corrosion specific Guidelines
Title (German)
Hygiene in der Trinkwasser-Installation - Teil 6: Instandsetzung - Technische und korrosionsspezifische Hinweise