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Standards GB - Chinese national standards - Page 8535
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/T 7155.1-1987
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Determination of density of thermoplastic pipes and fittings—Part 1:Determination of reference density of polyethylene pipes and fittings
WITHDRAWN published on 2.1.1987
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GB/T 7155.2-1987
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Determination of density of thermoplastic pipes and fittings—Part 2:Determination of density of polypropylene pipes and fittings
WITHDRAWN published on 2.1.1987
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GB/T 7156-1987
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Codes of secret level for documents
WITHDRAWN published on 3.1.1987
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GB/T 7157-1987
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Electric soldering irons
WITHDRAWN published on 6.1.1987
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GB/T 7157-2008
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Electric soldering irons
WITHDRAWN published on 26.6.2008
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GB 7158-1987
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Safety requirements for electric soldering irons
WITHDRAWN published on 1.1.1987
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GB/T 7159-1987
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General rules for the formulation of letter symbols in electrotechnology
WITHDRAWN published on 6.1.1987
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GB/T 716-1991
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Cold-rolled carbon structural steel strips
WITHDRAWN published on 26.3.1991
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GB/T 7160-1987
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Micron nickel carbonyl powder
WITHDRAWN published on 7.1.1987
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GB/T 7160-2008
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Carbonyl nickel powder
WITHDRAWN published on 31.3.2008
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