GOST 14771-1976 Gas-shielded arc welding. Welded joints. Main types, design elements and dimensions
GOST 15150-1969 Machines, instruments and other industrial products. Modifications for different climatic regions. Categories, operating, storage and transportation conditions as to environment climatic aspects influence
GOST 15151-1969 Machines, instuments and other industrial products for tropics. General specifications