NA 012
DIN Standards Committee Chemical Apparatus Engineering
Standards
[Withdrawn]
DIN 28139-2
DIN 28139-2
Welding necks for glass lined vessels; form M manhole, handhole and assembly opening for clamp screw connections; connecting, dimensions
Title (German)
Vorschweißbunde für emaillierte Apparate; Form M Mannloch-, Handlochstutzen, Montageöffnung mit Klammerschrauben; Anschlußmaße