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Standards GB - Chinese national standards - Page 6699
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 28712.4-2012
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Types and basic parameters of heat exchangers—Part 4:Vertical thermo siphon reboilers
WITHDRAWN published on 3.9.2012
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GB/T 28712.5-2012
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Types and basic parameters of heat exchangers—Part 5:Spiral heat exchangers
WITHDRAWN published on 3.9.2012
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GB/T 28712.6-2012
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Types and basic parameters of heat exchangers—Part 6:Air cooled heat exchangers
WITHDRAWN published on 3.9.2012
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GB/T 28713.2-2012
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Enhanced heat transfer elements used in tube-shell heat exchangers—Part 2:Stainless steel corrugated tubes
WITHDRAWN published on 3.9.2012
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GB/T 28713.3-2012
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Enhanced heat transfer elements used in tube-shell heat exchangers—Part 3:Wavy tubes
WITHDRAWN published on 3.9.2012
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GB/T 28714-2012
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Directive for technique of water metering
WITHDRAWN published on 3.9.2012
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GB 28736-2012
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Minimum allowable values of energy efficiency and energy efficiency grades for arc welding machines
WITHDRAWN published on 5.11.2012
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GB/T 28766-2012
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Natural gas—Performance evaluation for on-line analytical systems
WITHDRAWN published on 5.11.2012
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GB/T 2877-1981
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Hydraulic fluid power—Two-port slip-in cartridge valves cavities
WITHDRAWN published on 21.1.1982
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GB/T 2877-2007
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Hydraulic fluid power—Two-port slip-in cartridge valves—Cavities
WITHDRAWN published on 30.4.2007
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