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Standards GB - Chinese national standards - Page 5861
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 18251-2000
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Method for the assessment of pigment or carbon black dispersion in polyolefin pipes,fittings and compounds
WITHDRAWN published on 21.11.2000
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GB/T 18252-2000
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Plastics piping and ducting systems—Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation
WITHDRAWN published on 21.11.2000
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GB/T 18252-2008
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Plastics piping and ducting systems—Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation
WITHDRAWN published on 19.8.2008
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GB/T 18253-2000
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Steel and steel products—Types of inspection documents
WITHDRAWN published on 17.11.2000
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GB/T 18254-2000
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High-carbon chromium bearing steel
WITHDRAWN published on 17.11.2000
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GB/T 18254-2002
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High-carbon chromium bearing steel
WITHDRAWN published on 10.3.2002
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GB/T 18255-2000
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Coking viscous oil products—Determination of distillation range
WITHDRAWN published on 17.11.2000
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GB/T 18256-2000
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Welded steel tubes(except submerged arc-welded)—Ultrasonic testing for verification of hydraulic leak-tightness
WITHDRAWN published on 17.11.2000
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GB/T 18257-2000
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Refractory bricks for use in rotary kilns—Hot-face identification marking
WITHDRAWN published on 17.11.2000
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GB/T 18259-2000
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Wood-based panel & its surface decoration—Terms
WITHDRAWN published on 4.12.2000
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