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Gas supply system. Natural gas production. Field pipelines. Mechanical safety. Pressure and leak tests
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Ethanol for industrial use. Methods of test. Determination of aldehydes content. Visual colorimetric method
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Mining equipment. Machines for drilling blast holes in open mountain developments. General technical requirements and test methods
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Titanomagnetite ores, ironvanadium concentrates, agglomerates and pellets. Methods for determination of silicon dioxide
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