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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
Chemical reagent—Sodium pyrosulfite
WITHDRAWN published on 20.12.1995
Selected format:Chemical reagent—Copper () chloride dihydrate
WITHDRAWN published on 20.12.1995
Selected format:Conveyor belts—Determination of elastic modulus
WITHDRAWN published on 20.12.1995
Selected format:Conveyor belts—Determination of elastic and permanent elongation and calculation of elastic modulus
WITHDRAWN published on 24.4.2009
Selected format:Rubber—Determination of polyisoprene content
WITHDRAWN published on 20.12.1995
Selected format:Rubber—Determination of isoprene—isobutylene rubber or poly isobutylene content
WITHDRAWN published on 20.12.1995
Selected format:Rubber and plastics hoses—Method of test for flammability
WITHDRAWN published on 20.12.1995
Selected format:Plastics hose and hose assemblies—Thermoplastics, textile-reinforced, hydraulic type
WITHDRAWN published on 20.12.1995
Selected format:Plastics hoses and hose assemblies - Textile-reinforced types for hydraulic applications - Specification
WITHDRAWN published on 15.6.2009
Selected format:Gas for electronic industry—Silane
WITHDRAWN published on 20.12.1995
Selected format:Latest update: 2026-03-30 (Number of items: 2 269 988)
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