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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
Quality assurance of welding—Requirement for fusion welding joint of steel and classification for imperfection
WITHDRAWN published on 8.9.1990
Selected format:Fluxes for the submerged arc welding of low alloy steel
WITHDRAWN published on 8.9.1990
Selected format:Low-alloy steel electrodes and fluxes for submerged arc welding
WITHDRAWN published on 28.11.2003
Selected format:Limits and fits for products of wood and wooden materials
WITHDRAWN published on 8.9.1990
Selected format:Surface roughness--Parameters and their values for wooden pieces
WITHDRAWN published on 8.9.1990
Selected format:General specification for speed reducer with small module cylindrical gears
WITHDRAWN published on 8.9.1990
Selected format:Method of test for explosion limits of combustible gases in air
WITHDRAWN published on 10.9.1990
Selected format:Antitoxic regulations for storage-transportation, marketing and use of pesticides
WITHDRAWN published on 8.9.1990
Selected format:Electrical apparatus for use in the presence of combustible dust—Part 1-1:Electrical apparatus protected by enclosures and surface temperature limitation—Specification for apparatus
WITHDRAWN published on 17.10.2000
Selected format:Electrical apparatus for use in the presence of combustible dust—Part 1:General requirements
WITHDRAWN published on 17.12.2013
Selected format:Latest update: 2026-01-01 (Number of items: 2 253 680)
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