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Standards GB - Chinese national standards - Page 5102
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 7139-2023
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Plastics—Vinyl chloride homopolymers and copolymers—Determination of chlorine content
Standard published on 6.8.2023
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GB/T 714-2025
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Structural steel for bridge
Standard published on 31.10.2025
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GB/T 7141-2008
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Plastics - Methods of heat aging
Standard published on 14.8.2008
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GB/T 7142-2002
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Determination of time-temperature limits for plastics after prolonged exposure to heat
Standard published on 29.5.2002
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GB/T 7143-2025
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Methods for chemical analysis of silica sand for foundry
Standard published on 28.2.2025
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GB/T 7144-2016
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Coloured cylinder mark for gases
Standard published on 24.2.2016
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GB/T 7146-1986
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Methods of sampling and sample preparation ofantimony ores in bags
Standard published on 30.12.1986
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GB/T 7153-2002
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Directly heated positive step-function temperature coefficient thermistors--Part 1:Generic specification
Standard published on 18.7.2002
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GB/T 7154.1-2003
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Thermistors--Directly heated positive step-function temperature coefficient--Part 1-1:Blank detail specification for current limiting application--Assessment level EZ
Standard published on 17.1.2003
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GB/T 7154.2-2003
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Thermistors--Directly heated positive step-function temperature coefficient--Part 1-2: Blank detail specification--Heating element application--Assessment level EZ
Standard published on 24.1.2003
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