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Standards GB - Chinese national standards - Page 5754
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 12714-1991
WITHDRAWN
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Americium—Beryllium neutron sources
WITHDRAWN published on 28.12.1991
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GB/T 12715-1991
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Chromosomal aberration analysis for biological dose assessment
WITHDRAWN published on 28.1.1991
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GB/T 12716-1991
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Taper pipe threads with 60 degree
WITHDRAWN published on 4.2.1991
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GB/T 12716-2002
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Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads
WITHDRAWN published on 10.3.2002
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GB/T 12717-1991
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Test method of acetates for industrial use
WITHDRAWN published on 4.2.1991
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GB/T 12718-2001
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High-tensile steel chains(round link) for mining
WITHDRAWN published on 19.3.2001
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GB/T 12719-1991
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Exploration specification of hydrogeology and engineering geology in mining areas
WITHDRAWN published on 4.2.1991
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GB/T 1272-1988
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Chemical reagent—Potassium iodide
WITHDRAWN published on 20.9.1988
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GB/T 12721-1991
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Rubber hoses—Determination of abrasion resistance of the outer cover
WITHDRAWN published on 1.2.1991
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GB/T 12722-1991
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Rubber and plastics hose assemblies—Flexing combined with hydraulic impulse test (Half omega test)
WITHDRAWN published on 1.2.1991
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