Norm
[AKTUELL]
UNE-EN 1591-4
UNE-EN 1591-4
Flanges and their joints - Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical service pressurized systems
Titel (englisch)
Flanges and their joints - Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical service pressurized systems