NA 032
DIN Standards Committee Gas Technology
DIN EN 12007-2 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| DVGW GW 331 | 1994-10 | Welding supervisor for weldings at PE-pipelines for gas and water supply - Training and examination schedule More |
| ISO 3 | 1973-04 | Preferred numbers; Series of preferred numbers More |
| ISO 497 | 1973-05 | Guide to the choice of series of preferred numbers and of series containing more rounded values of preferred numbers More |
