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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
Hydraulic fluid power--Hose connector--Connecting dimension(Part 3:Welding or quick-action type)
WITHDRAWN published on 18.4.1988
Selected format:Slip-Discharge screen centrifuges--Types and basic parameters
WITHDRAWN published on 1.1.1988
Selected format:Filter belt press--Types and basic parameters
WITHDRAWN published on 1.1.1988
Selected format:Determination of sound power level for noise emitted by reciprocating pump--Engineering method
WITHDRAWN published on 18.4.1988
Selected format:Dimension, shape, weight and tolerance for cold-drawn hexagonal steels
WITHDRAWN published on 1.1.1982
Selected format:Brocade and satin of silk fabrics
WITHDRAWN published on 1.1.1988
Selected format:Water repellency treated polyamide filament fabric
WITHDRAWN published on 1.1.1988
Selected format:Silk fabric for electric insulation
WITHDRAWN published on 23.4.1988
Selected format:Velvet
WITHDRAWN published on 1.1.1988
Selected format:Cross recessed pan head screw and plain washer assemblies
WITHDRAWN published on 16.4.1988
Selected format:Latest update: 2026-03-17 (Number of items: 2 266 788)
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