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 2.601-2006 Unified system for design documentation. Exploitative documents*, 2024-04-19 Update
GOST 22667-1982 Combustible natural gases. Calculation method for determination of calorific value, specific gravity and Wobbe index*, 2024-04-19 Update