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Standards GB - Chinese national standards - Page 5818
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 12967.6-2008
WITHDRAWN
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Test Methods for anodic oxidation coatings of aluminium and aluminium alloys—Part 6:Determination of color differences and appearance of colored anodic oxide films by viewing method
WITHDRAWN published on 9.6.2008
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GB/T 12967.7-2010
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Test methods for anodic oxidation coatings of aluminium and aluminium alloys—Part 7:Measurement of abrasion resistance of anodic oxidation coatings by sand falling test apparatus
WITHDRAWN published on 14.1.2011
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GB/T 12969.1-1991
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Method of ultrasonic testing for titanium and titanium alloy tubes
WITHDRAWN published on 4.6.1991
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GB/T 12969.2-1991
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Method of eddy current testing for titanium and titanium alloy tubes
WITHDRAWN published on 4.6.1991
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GB/T 1297-1993
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Chemical reagent--L-Cysteine hydrochloride anhydrous
WITHDRAWN published on 1.3.1993
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GB/T 12970.1-1991
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Flexible copper stranded conductors for electrical purposes—Part 1:General
WITHDRAWN published on 6.6.1991
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GB/T 12970.2-1991
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Flexible copper stranded conductors for electrical purposes—Part 2:Flexible copper stranded conductors
WITHDRAWN published on 6.6.1991
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GB/T 12970.3-1991
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Flexible copper stranded conductors for electrical purposes—Part 3:Flexible copper wire for antenna
WITHDRAWN published on 6.6.1991
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GB/T 12970.4-1991
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Flexible copper stranded conductors for electrical purposes—Part 4:Copper brush wires
WITHDRAWN published on 6.6.1991
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GB 12971.1-1991
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Trolley and contact wires for electric traction—Part 1:General
WITHDRAWN published on 6.6.1991
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