State system for ensuring the uniformity of measurements. Pressure, combined pressure-vacuum, vacuum, gauges and draught gauges with pneumatic output signals. Methods of verification
Drill pipes and other elements of drilling equipment for petroleum and natural gas industries. Part 2. Basic parameters and inspection of thread shouldered connection. General technical requirements
Explosive atmospheres. Technical requirements and test methods for endurance to environmental factors influencing the peculiarities of operation of equipment in explosive atmospheres
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