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Standards GB - Chinese national standards - Page 720
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 17126.2-2009
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Agricultural tractors and machinery - Power take-off drive shafts and power-input connection - Part 2Specification for use of PTO drive shaft, and position and clearance of PTO drive line and PIC for various attachments
Standard published on 30.11.2009
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GB/T 17127.1-1998
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Agricultural wheeled tractors and implements--Three-point hitch couplers--Part 1:U-frame coupler
Standard published on 10.8.1998
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GB/T 17127.1-2026
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Agricultural wheeled tractors and implements—Three-point hitch couplers—Part 1:U-frame coupler
Execute Date: november 2026
Standard published on 30.7.2026
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GB/T 17127.2-1997
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Agricultural wheeled tractors and implements--Three-point hitch coupler--Part 2:A-frame coupler
Standard published on 1.12.1997
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GB/T 17127.3-2025
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Agricultural wheeled tractors and implements—Three-point hitch couplers—Part 3: Link coupler
Standard published on 31.10.2025
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GB/T 17127.4-2003
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Agriculturalwheeled tractors and implements--Three-point hitch couplers--Part 4: Bar coupler
Standard published on 11.3.2003
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GB/T 1713-2008
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Determination of density of pigments - Pyknometer method
Standard published on 4.6.2008
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GB/T 17132-1997
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Environment--Determination of methylmercury--Gas chromatography
Standard published on 8.12.1997
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GB/T 17134-1997
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Soil quality--Determination of total arsenic--Silver diethyldithiocarbamate spectrophotometry
Standard published on 8.12.1997
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GB/T 17135-1997
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Soil quality--Determination of total arsenic--Spectrophotometric method with potassium borohyride andsilver nitrate
Standard published on 8.12.1997
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