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Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um = 36 kV) up to 150 kV (Um = 170 kV). Test methods
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Abrasive materials. Grain and grain size distribution of grinding powders. Test of grain size distribution
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Pipeline valves. Safety valves for trunk oil pipelines and oil product pipelines. General specifications
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Single-layer measuring metal bellows. Specifications
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