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Standards GB - Chinese national standards - Page 7539
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 2586-1991
WITHDRAWN
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Unit, symbol and conversion sectors of heat
WITHDRAWN published on 29.1.1991
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GB/T 25861-2010
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Water-source high temperature heat pumps using the vapor compression cycle
WITHDRAWN published on 10.1.2011
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GB/T 2587-1981
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Energy equilibrium of heating devices--Common rules
WITHDRAWN published on 31.5.1981
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GB/T 2588-2000
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The general principles for calculation of thermal efficiency of equipment
WITHDRAWN published on 16.3.2000
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GB/T 2589-1990
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General principles for calculation of total production energy consumption
WITHDRAWN published on 24.7.1990
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GB/T 2589-2008
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General principles for calculation of the comprehensive energy consumption
WITHDRAWN published on 3.2.2008
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GB/T 25890.1-2010
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Railway applications—Fixed installations—DC switchgear—Part 1:General
WITHDRAWN published on 10.1.2011
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GB/T 25890.2-2010
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Railway applications—Fixed installations—DC switchgear—Part 2:DC circuit breakers
WITHDRAWN published on 10.1.2011
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GB/T 25890.3-2010
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Railway applications - Fixed installations - DC switchgear - Part 3: Indoor d.c. disconnectors, switch disconnectors and earthing switches
WITHDRAWN published on 10.1.2011
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GB/T 25890.4-2010
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Railway applications - Fixed installations - DC switchgear - Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches
WITHDRAWN published on 10.1.2011
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