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Standards GB - Chinese national standards - Page 6144
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 20934-2007
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Steel tie rod
WITHDRAWN published on 14.5.2007
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GB/T 20935.1-2007
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Method of electromagnetic acoustic inspection for metal materials—Part 1:Standard guide for electromagnetic acoustic transducers(EMATs)
WITHDRAWN published on 14.5.2007
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GB/T 20935.2-2009
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Method of electromagnetic acoustic inspection for metal materials—Part 2:Standard practice for ultrasonic testing using electromagnetic acoustic transducer (EMAT) techniques
WITHDRAWN published on 30.10.2009
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GB/T 20935.3-2009
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Method of electromagnetic acoustic inspection for metal materials—Part 3:Standard test method for ultrasonic surface examinations using electromagnetic acoustic transducer (EMAT) techniques
WITHDRAWN published on 30.10.2009
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GB/T 20936.1-2007
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Electrical apparatus for the detection and measurement of flammable gases—Part 1:General requirement and test methods
WITHDRAWN published on 30.4.2007
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GB/T 20936.1-2017
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Gas detectors for explosive atmospheres—Part 1:Performance requirements of detectors for flammable gases
WITHDRAWN published on 29.12.2017
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GB 20936.2-2009
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Electrical apparatus for the detection and measurement of flammable gases—Part 2:Performance requirements for group I apparatus indicating a volume fraction up to 5 % methane in air
WITHDRAWN published on 30.9.2009
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GB/T 20936.3-2009
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Electrical apparatus for the detection and measurement of flammable gases—Part 3:Performance requirements for group apparatus indicating a volume fraction up to 100% methane in air
WITHDRAWN published on 21.4.2009
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GB 20936.4-2008
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Electrical apparatus for the detection and measurement of flammable gases—Part 4:Performance requirements for group apparatus indicating a volume fraction up to 100% gas
WITHDRAWN published on 30.12.2008
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GB/T 20937-2007
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Potassium magnesium of sulphate fertilizer
WITHDRAWN published on 6.6.2007
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