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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
Test methods for agricultural wheeled and tracklaying tractors—Part 12:Working tests
WITHDRAWN published on 3.3.1993
Selected format:Agricultural tractors—Test procedures—Part18:Hydraulic power at tractor/implement interface
WITHDRAWN published on 6.2.2006
Selected format:Test methods for agricultural wheeled and tracklaying tractors—Part 2:Measurements of tractor parameters
WITHDRAWN published on 3.3.1993
Selected format:Test methods for agricultural wheeled and tracklaying tractors—Part 3:PTO power tests
WITHDRAWN published on 3.3.1993
Selected format:Test methods for agricultural wheeled and tracklaying tractors—Part 4:Hydraulic lifting capacity and power tests
WITHDRAWN published on 3.3.1993
Selected format:Test methods for agricultural wheeled and tracklaying tractors—Part 5:Turning and clutch operating tests
WITHDRAWN published on 3.3.1993
Selected format:Agricultural tractors—Test procedures—Part 5:Turning and clearance diameters
WITHDRAWN published on 6.2.2006
Selected format:Test methods for agricultural wheeled and tracklaying tractors—Part 6:Braking tests
WITHDRAWN published on 3.3.1993
Selected format:Test methods for agricultural wheeled and tracklaying tractors—Part 7:Measurements of operator""s field vision
WITHDRAWN published on 3.3.1993
Selected format:Test methods for agricultural wheeled and tracklaying tractors—Part 8:Measurements of noise
WITHDRAWN published on 3.3.1993
Selected format:Latest update: 2025-11-13 (Number of items: 2 243 644)
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