Full form screw ring-gauges for pipe cylindrical threads from 4" up to 6" nominal diameter. Construction and basic sizes
NORMA vydána dne 1.1.1974
Designation standards: GOST 18931-73
Publication date standards: 1.1.1974
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: Russian technical standard
Kategorie: Technické normy GOST
Implemented changes and corrections:
Amd. 8.81