GOST 28178-89

Steel construction plumbs-lines. Specifications

Silver and silver alloys. Marks

Flanges of vessels and apparatus. Types and parameters

Food common salt. Mercurymetric method of chlor-ion mass fraction determination

Refractory products. Method for determination of refractoriness-under-load

State system for ensuring the uniformity of measurements. State verification schedule for measuring instruments of power of electromagnetic oscillations in coaxial and waveguide lines in the frequency range 0,03 to 37,5 GHz