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Standards GB - Chinese national standards - Page 5720
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 12550-1990
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Motor vehicles--Air horn flange of carburators--Mounting dimensions
WITHDRAWN published on 1.1.1990
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GB/T 12551-1990
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Flange of diaphragm type fuel pumps--Mounting dimensions
WITHDRAWN published on 1.1.1990
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GB/T 12552-1990
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Maximal safety depths for commercial diving
WITHDRAWN published on 12.12.1990
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GB 12553-1990
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Fire performance requirements and test methods of fire fighting boats
WITHDRAWN published on 12.12.1990
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GB/T 12554-1990
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Specification of injection mould for plastics
WITHDRAWN published on 11.12.1990
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GB/T 12555.1-1990
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Injection mould for plastic large-size mould bases—Standard mould bases
WITHDRAWN published on 11.12.1990
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GB/T 12555.10-1990
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Injection mould for plastic large-size mould bases—Guide pins for ejector plater
WITHDRAWN published on 11.12.1990
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GB/T 12555.11-1990
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Injection mould for plastic large-size mould bases—Straight guide bushes
WITHDRAWN published on 11.12.1990
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GB/T 12555.12-1990
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Injection mould for plastic large-size mould bases—Guide bushes with head
WITHDRAWN published on 11.12.1990
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GB/T 12555.13-1990
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Injection mould for plastic large-size mould bases—Return pins
WITHDRAWN published on 11.12.1990
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