NA 012
DIN Standards Committee Chemical Apparatus Engineering
Standards
[Withdrawn]
DIN 8902
DIN 8902
Pressure resistant circular sight glasses of soda-lime-glass without limitation in the range of low temperature
Title (German)
Runde Schauglasplatten aus Natron-Kalk-Glas für Druckbeanspruchung ohne Begrenzung im Tieftemperaturbereich