
Full form screw ring-gauges for pipe cylindrical threads from 4" up to 6" nominal diameter. Construction and basic sizes
STANDARD published on 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
        Category: Technical standards GOST
        
                
              
Implemented changes and corrections:
Amd. 8.81