Plastics piping systems for pressure and non-pressure drainage and sewerage - Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin. (ISO 10467:2004, MOD)
State system for ensuring the uniformity of measurements of the Republic of Uzbekistan. Measurements of the flow and quantity of liquids and gases by differential pressure method. Organization and procedure of metrological control and supervision of the condition and the use of measurement systems