NA 109
DIN Standards Committee Petroleum and Natural Gas Industries
DIN EN ISO 21809-1 [Withdrawn] referenced in following documents:
| Document number | Edition | Title |
|---|---|---|
| DVGW GW 19-1 | 2015-07 | Determination of condition information of non cathodically protected metallic pipelines of gas and water supply - Part 1: Detection, assessment and recommendations More |
