NA 012
DIN Standards Committee Chemical Apparatus Engineering
Standards
[Withdrawn]
DIN 28124-1
DIN 28124-1
Manhole closures for unpressurized vessels and process apparatus of nonalloy and stainless steel
Title (German)
Mannlochverschlüsse für drucklose Behälter und Apparate aus unlegierten und nichtrostenden Stählen