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Standards GB - Chinese national standards - Page 6655
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 18691-2002
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Agricultural irrigation equipment—Check valves
WITHDRAWN published on 10.3.2002
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GB/T 18691.1-2011
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Agricultural irrigation equipment—Irrigation valves—Part 1:General requirements
WITHDRAWN published on 12.5.2011
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GB/T 18691.2-2011
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Agricultural irrigation equipment—Irrigation valves—Part 2:Isolating valves
WITHDRAWN published on 12.5.2011
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GB/T 18691.3-2011
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Agricultural irrigation equipment—Irrigation valves—Part 3:Check valves
WITHDRAWN published on 12.5.2011
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GB/T 18691.4-2011
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Agricultural irrigation equipment—Irrigation valves—Part 4:Air valves
WITHDRAWN published on 12.5.2011
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GB/T 18691.5-2011
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Agricultural irrigation equipment—Irrigation valves—Part 5:Control valves
WITHDRAWN published on 12.5.2011
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GB/T 18693-2002
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Agricultural irrigation equipment—Float type air release valves
WITHDRAWN published on 10.3.2002
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GB/T 18695-2002
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Terms of feed processing equipment
WITHDRAWN published on 18.3.2002
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GB/T 187-1963
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Tie-plates for 38 kg/m and 43 kg/m steels rails
WITHDRAWN published on 26.9.1963
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GBN 187.1-1982
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WITHDRAWN published on 1.1.1982
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