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Standards GB - Chinese national standards - Page 6700
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 28774-2012
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Synchronous belt drives—Metric pitch—Trapezoidal toothed synchronous belts
WITHDRAWN published on 5.11.2012
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GB/T 28775-2012
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Synchronous belt drives—Metric pitch—Trapezoidal toothed synchronous pulleys
WITHDRAWN published on 5.11.2012
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GB/T 28778-2012
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Pilot-operated safety valves
WITHDRAWN published on 5.11.2012
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GB/T 2878-1993
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Fluid power systems and components—Ports—Dimensions and design
WITHDRAWN published on 11.1.1993
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GB/T 2878.1-2011
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Connections for hydraulic fluid power - Ports and stud ends with metric threads and O-ring sealing - Part 1: Ports
WITHDRAWN published on 30.12.2011
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GB/T 28780-2012
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Safety of machinery—Integral lighting of machines
WITHDRAWN published on 5.11.2012
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GB/T 28782.2-2012
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Hydraulic fluid power—Measurement techniques—Part 2:Measurement of average steady-state pressure in a closed conduit
WITHDRAWN published on 5.11.2012
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GB/T 28785-2012
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Mechanical vibration—Criteria and safeguards for the in-situ balancing of medium and large rotors
WITHDRAWN published on 5.11.2012
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GB/T 28787-2012
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Data communication protocol between on-board information terminal of urban public transit dispatching and control center
WITHDRAWN published on 5.11.2012
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GB/T 2879-1986
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Hydraulic fluid power—Cylinder rod and piston seals for reciprocating applications—Dimensions and tolerances of housings
WITHDRAWN published on 22.7.1986
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