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Standards GB - Chinese national standards - Page 6149
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 13740-1992
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Testing method of divergence angle of laser radiation
WITHDRAWN published on 4.11.1992
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GB/T 13741-1992
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Testing method of beam diameter of laser radiation
WITHDRAWN published on 4.11.1992
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GB/T 13742-1992
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Optical transer function—accuracy of measurement
WITHDRAWN published on 4.11.1992
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GB/T 13745-1992
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Classification and code of disciplines
WITHDRAWN published on 1.11.1992
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GB 13746-1992
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Safety and hygiene code for working with lead
WITHDRAWN published on 5.11.1992
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GB/T 13747.1-1992
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Zirconium and zirconium alloys—Determination of tin content
WITHDRAWN published on 5.11.1992
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GB/T 13747.10-1992
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Zirconium and zirconium alloys—Determination of tungsten content—Thiocyanate spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13747.11-1992
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Zirconium and zirconium alloys—Determination of molybdenum content—Thiocyanate spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13747.12-1992
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Zirconium and zirconium alloys—Determination of silicon content—Molybdenum blue spectrophotometric method
WITHDRAWN published on 5.11.1992
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GB/T 13747.13-1992
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Zirconium and zirconium alloys—Determination of lead content—Oscillopolarographic method
WITHDRAWN published on 5.11.1992
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