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Standards GB - Chinese national standards - Page 5594
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 12243-2005
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Spring loaded safety valves
WITHDRAWN published on 21.2.2005
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GB/T 12244-1989
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General specification for pressure reducing valves
WITHDRAWN published on 4.1.1990
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GB/T 12245-1989
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Methods of performance test for pressure reducing valves
WITHDRAWN published on 4.1.1990
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GB/T 12246-1989
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Pilot-operated reducing valves
WITHDRAWN published on 4.1.1990
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GB/T 12247-1989
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Automatic steam traps—Classification
WITHDRAWN published on 4.1.1990
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GB/T 12248-1989
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Automatic steam traps—Definition of technical terms
WITHDRAWN published on 4.1.1990
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GB/T 12249-1989
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Automatic steam traps—Marking
WITHDRAWN published on 4.1.1990
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GB/T 12250-1989
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Automatic steam traps—Face-to-face dimensions
WITHDRAWN published on 4.1.1990
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GB/T 12251-1989
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Automatic steam traps—Test methods
WITHDRAWN published on 4.1.1990
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GB/T 12252-1989
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WITHDRAWN published on 1.1.1989
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