GB - Čínské národní normy

Common test methods for insulating and sheathing materials of electric and optical cables - Part 31:Methods specific to PVC compounds - Pressure test at high temperature - Test for resistance to cracking

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Common test methods for insulating and sheathing materials of electric and optical cables - Part 32Methods specific to PVC ompounds - Loss of mass test - Thermal stability test

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Common test methods for insulating and sheathing materials of electric and optical cables - Part 41:Methods specific to polyethylene and polypropylene compounds - Resistance to environmental stress cracking - Measurement of the melt flow index - Carbon black and/or mineral filler content measurement in polythylene by direct combustion - Measurement of carbon black content by thermo gravimetric analysis(TGA)- Assessment of carbon black dispersion in polyethylene using a microscope

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Common test methods for insulating and sheathing materials of electric and optical cables - Part 42:Methods specific to polyethylene and polypropylene compounds - Tensile strength and elongation at break after conditioning at elevated temperature - Wrapping test after conditioning at elevated temperature - Wrapping test after thermal ageing in air - Measurement of mass increase - Long-term stability test - Test method for copper-catalyzed oxidative degradation

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Common test methods for insulating and sheathing materials of electric and optical cables - Part 51:Methods specific to filling compounds - Drop point - Separation of oil - Lower temperature brittleness - Total acid number - Absence of corrosive components - Permittivity at 23 - DC resistivity at 23 and 100

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Hand protection - Guide for the selection,use and maintenance of protective gloves

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Selection,use and maintenance of hand protective equipment

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Chemical analysis of ferric-containing dust and sludge by XRF-Fused cast bead method

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Technical specification of steel slag treatment technology

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Manganese ores - Determination of moisture content

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