GOST 16900-71

Steel pipes for manufacturing of equipment and piping of nuclear power plants. General specifications. Part 1. Seamless steel pipes of non-alloyed and alloyed steels

Copper of high purity. General requirements for methods analysis

Reliability of the constructions and foundations. Basic principles and requirements

Services of trade. General requirements

Lasers and laser-related equipment. Test methods for laser beam parameters. Beams positional stability

State system for ensuring the uniformity of measurements. State verification scheme for measuring instruments of sound pressure in water within frequency range from 1*10 -3 to 1*10 6 Hz