NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Technical rule
[CURRENT]
DVGW G 412
DVGW G 412
Cathodic Protection of Buried Gas Distribution Networks and Gas Distribution Pipelines
Title (German)
Kathodischer Korrosionsschutz (KKS) von erdverlegten Gasverteilungsnetzen und Gasverteilungsleitungen