State system for ensuring the uniformity of measurements. Measurement of vibration power flow from machines into connected support structures. Part 1. Direct method
Tubes for boiler and heat exchanging equipment. Specifications. Part 1. Seamless steel pipes to work under pressure not more than 6,4 MPa and at temperatures not exceeding 400 °C
State system for ensuring the uniformity of measurements. Measurement of liquids and gases flow rate and quantity by means of orifice instruments. Part 3. Nozzles and Venturi nozzles. Technical requirements
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