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Standards GB - Chinese national standards - Page 5526
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 11250.1-1989
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Method for measuring thickness of coated layer on composite metal--The metallographic method
WITHDRAWN published on 31.3.1989
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GB/T 11250.2-1989
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Method for measuring thickness of coated layer on composite metal--The X-ray fluorescent method
WITHDRAWN published on 31.3.1989
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GB/T 11250.3-1989
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Method for measuring thickness of nickel-coated layer on composite metal--The volumetry
WITHDRAWN published on 31.3.1989
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GB/T 11250.4-1989
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Method for measuring thickness of aluminium-coated layer on composite metal--The gravimetric method
WITHDRAWN published on 31.3.1989
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GB/T 11251-1989
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Hot-rolled alloy structural steel plates
WITHDRAWN published on 31.3.1989
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GB/T 11251-2009
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Hot-rolled alloy structural steel plates
WITHDRAWN published on 30.10.2009
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GB/T 11252-1989
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Hot-rolled tri-clad plates and wide strips for plough wall
WITHDRAWN published on 31.3.1989
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GB/T 11253-1989
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Cold-rolled plain carbon andlow alloy structural steel sheets and strips
WITHDRAWN published on 31.3.1989
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GB/T 11253-2007
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Cold-rolled sheets and strips of carbon structural steels
WITHDRAWN published on 25.10.2007
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GB/T 11254-1989
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Hot rolled steel sheets for compressor valves
WITHDRAWN published on 31.3.1989
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