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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
General requirement of agricultural tractors - Part 1: Under 50 kW wheeled tractors
Standard published on 31.12.2012
Selected format:Agricultural tractors—General requirement—Part 250 kW130 kW wheeled tractors
Standard published on 28.2.2025
Selected format:Agricultural tractors—General requirement—Part 3Over 130 kW wheeled tractors
Standard published on 28.2.2025
Selected format:General requirement of agricultural tractors - Part 4: Crawler tractors
Standard published on 11.5.2012
Selected format:General requirement of agricultural tractors - Part 5: Belt-drive wheeled tractors
Standard published on 31.12.2012
Selected format:Agricultural tractors—General requirements—Part 6Four-wheel boat tractors
Standard published on 24.2.2016
Selected format:Agricultural tractors—General requirement—Part 7: Three-wheel boat tractors
Standard published on 29.9.2017
Selected format:Reciprocating internal combustion engines—Evaluation method of torsional vibration of crankshaft system
Standard published on 7.9.2023
Selected format:Metal-cutting machine tools - Method of type designation
Standard published on 11.8.2008
Selected format:Wookworking machines - Turning lathes - Nomenclature and acceptance conditions
Standard published on 11.8.2008
Selected format:Latest update: 2026-04-28 (Number of items: 2 274 955)
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