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Standards GB - Chinese national standards - Page 6796
Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
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GB 1994.12-1988
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Test method for physical-chemical properties of electrical carbon product--Hot resistance of carbon pile
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GB 1994.13-1988
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Test method for physical-chemical properties of electrical carbon product--Mechanical strength of carbon pile
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GB 1994.14-1988
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Test method for physical-chemical properties of electrical carbon product--Volume density
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GB 1994.15-1988
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Test method for physical-chemical properties of electrical carbon product--Porosity
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GB 1994.16-1988
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Test method for physical-chemical properties of electrical carbon product--Sulphur content
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GB 1994.17-1988
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Test method for physical-chemical properties of electrical carbon product--Ash content
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GB 1994.2-1988
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Test method for physical-chemical properties of electrical carbon product--Resistivity
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GB 1994.3-1988
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Test method for physical-chemical properties of electrical carbon product--Rockwell hardness
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GB 1994.4-1988
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Test method for physical-chemical properties of electrical carbon product--Shore hardness
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GB 1994.5-1988
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Test method for physical-chemical properties of electrical carbon product--Connection electrical resistance of brush/flexible connection
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