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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
Power transformers--Part 5:Ability to withstand short circuit
WITHDRAWN published on 19.9.2008
Selected format:Power transformers—Part 7:Loading guide for oil-immersed power transformers
WITHDRAWN published on 24.9.2008
Selected format:Reciprocating mowers—Types and basic parameters
WITHDRAWN published on 31.3.1989
Selected format:Reciprocating mowers—Types and basic parameters
WITHDRAWN published on 11.7.2005
Selected format:The machine for expanding rice hull--Test methods
WITHDRAWN published on 1.1.1989
Selected format:Refrigerated bulk milk tanks
WITHDRAWN published on 26.2.2001
Selected format:Gauges of 1/4 tapers
WITHDRAWN published on 31.3.1989
Selected format:Gauges of 1/4 tapers
WITHDRAWN published on 10.11.2003
Selected format:Tool shankswith 724 taper for automatic tool changers--Shanks No. 4045 and 50
WITHDRAWN published on 31.3.1989
Selected format:Tool shanks with 724 taper for automatic tool changers—Shanks Nos.40,45 and 50—Part 1:Dimensions and conicity tolerances
WITHDRAWN published on 30.12.2006
Selected format:Latest update: 2026-01-28 (Number of items: 2 257 539)
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