Natural circulation stationary steam boilers less then 4 t/h. General requirements
NORM herausgegeben am 1.7.1990
Designation standards: GOST 28193-89
Publication date standards: 1.7.1990
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: Russian technical standard
Kategorie: Technische Normen GOST