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Standards GB - Chinese national standards - Page 7517
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 25428-2010
WITHDRAWN
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Petroleum and natural gas industries—Drilling and production equipment—Drilling and well-servicing structures
WITHDRAWN published on 10.11.2010
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GB/T 25428-2015
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Petroleum and natural gas industries—Drilling and production equipment—Drilling and well-servicing structures
WITHDRAWN published on 31.12.2015
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GB/T 25429-2010
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Specification for drill string non-return valve
WITHDRAWN published on 10.11.2010
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GB/T 2543.1-2001
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Textiles—Determination of twist in yarn—Part 1:Direct counting method
WITHDRAWN published on 26.2.2001
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GB/T 25430-2010
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Specification for drill through equipment—Rotating control devices
WITHDRAWN published on 10.11.2010
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GB 25431.1-2010
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Extruders and extrusion lines for rubber and plastics - Part 1: Safety requirements for extruders
WITHDRAWN published on 10.11.2010
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GB 25431.2-2010
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Extruders and extrusion lines for rubber and plastics - Part 2 :Safety requirements for die face pelletizers
WITHDRAWN published on 10.11.2010
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GB 25431.3-2010
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Extruders and extrusion lines for rubber and plastics - Part 3Safety requirements for haul-offs
WITHDRAWN published on 10.11.2010
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GB 25432-2010
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Safety requirements of daylight press
WITHDRAWN published on 10.11.2010
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GB 25433-2010
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Safety requirements of rubber internal mixers & plastics internal mixers
WITHDRAWN published on 10.11.2010
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