GOST 21123-85

Renewable power engineering. Geothermal power plants. Base safety requirements

Reagents. Colorimetric methods for determination of copper impurity

Reliability of structures. Terms and definitions

Aviation equipment. Hydraulic system. Pass-through and transitional connectors, under axial pressure fitting for pressure 35 MPa. Connector straight, coupling - nipple with inner cone

Polyethylene pressure pipes

Methodology and metrological support of environmental management, monitoring and control systems. Systems for automatic control and accounting of emissions and discharges of pollutants at nitrogen fertilizer production facilities. Basic requirements