Petroleum fragile bitumens. Specifications
STANDARD published on 1.1.1988
Designation standards: GOST 21822-87
Publication date standards: 1.1.1988
The number of pages: 13
Approximate weight : 39 g (0.09 lbs)
Country: Russian technical standard
Category: Technical standards GOST
Implemented changes and corrections:
Amd. 7.92
Amd. 11.99