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Standards GB - Chinese national standards - Page 7247
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 2585-1981
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Technical requirements for 38 kg/m to50 kg/m steel rails for railway
WITHDRAWN published on 1.1.1981
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GB/T 2585-2007
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Hot-rolled steel rails for railway
WITHDRAWN published on 12.7.2007
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GB/T 25852-2010
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Forged steel lifting components for use with grade 8 chain
WITHDRAWN published on 10.1.2011
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GB/T 25857-2010
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Low ambient temperature air source multi-connected heat pump(air conditioning) unit
WITHDRAWN published on 10.1.2011
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GB 2586-1991
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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WITHDRAWN published on 29.1.1991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WITHDRAWN published on 10.1.2011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WITHDRAWN published on 31.5.1981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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