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Standards GB - Chinese national standards - Page 8523
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 6567.3-1986
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Graphical symbols for piping systems—Piping accessories
WITHDRAWN published on 2.7.1986
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GB/T 6567.4-1986
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Graphical symbols for piping systems—Valves and control regulation actuators
WITHDRAWN published on 2.7.1986
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GB/T 6567.5-1986
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Graphical Symbols for piping systems--Axonometric representation of graphical symbols for piping,piping accessories and valves etc
WITHDRAWN published on 27.6.1986
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GB/T 6567.5-2003
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Graphical symbols for piping systems-Axonometric representation of graphical symbols for piping,piping accessories and valves etc
WITHDRAWN published on 29.4.2003
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GB/T 6568-2008
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Screen clothes for live working
WITHDRAWN published on 24.9.2008
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GB 6568.1-2000
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Screen clothes for live working
WITHDRAWN published on 14.7.2000
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GB 6568.2-2000
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Test procedure of screen clothes for live working
WITHDRAWN published on 14.7.2000
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GB/T 6569-1986
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Testing method for flexural strength of high performance ceramics
WITHDRAWN published on 17.7.1986
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GB/T 657-1993
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Chemical reagent—Hexaammonium heptamolybdate tetrahydrate
WITHDRAWN published on 1.3.1993
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GB/T 6570-1986
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Measuring methods for microwave diodes
WITHDRAWN published on 22.7.1986
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