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Standards GB - Chinese national standards - Page 7599
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 4256-2004
WITHDRAWN
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Core drills with parallel shanks and with Morse taper shanks
WITHDRAWN published on 10.2.2004
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GB/T 4257-1984
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Core drills--Technical requirements
WITHDRAWN published on 28.3.1984
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GB/T 4258-1984
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Countersinks with parallel shanks for angles 60°90°and 120°inclusive
WITHDRAWN published on 28.3.1984
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GB/T 4259-1984
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Countersinks--technical requirements
WITHDRAWN published on 28.3.1984
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GB/T 426-1978
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Test methods of shrinkage for printed and dyed fabrics
WITHDRAWN published on 20.6.1978
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GB/T 4260-1984
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Counterbores with parallel shanks and solid pilots
WITHDRAWN published on 28.3.1984
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GB/T 4261-1984
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Counterbores with morse taper shanks and detachable pilots
WITHDRAWN published on 28.3.1984
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GB/T 4262-1984
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Counterbores--technical requirements
WITHDRAWN published on 28.3.1984
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GB/T 4263-1984
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90°Countersinks with parallel shanks and solid pilots
WITHDRAWN published on 28.3.1984
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GB/T 4264-1984
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90°Countersinks with morse taper shanks and detachable pilots
WITHDRAWN published on 28.3.1984
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