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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
Polyethylene/Aluminum/Polyethylene composite pressure pipe—Part 1:PE/AL/PE pipe overlap-welded by aluminum pipe
WITHDRAWN published on 7.3.2003
Selected format:Polyethylene/Aluminum/Polyethylene composite pressure pipe—Part 2:PE/AL/PE pipe butt-welded by aluminum pipe
WITHDRAWN published on 7.3.2003
Selected format:Chlorinated poly(vinyl chloride)(PVC-C) piping systems for industrial applications—Part 1:General
WITHDRAWN published on 7.3.2003
Selected format:Chlorinated poly(vinyl chloride)(PVC-C) Piping systems for industrial applications—Part 2:Pipes
WITHDRAWN published on 7.3.2003
Selected format:Chlorinated poly(vinyl chloride)(PVC-C) piping systems for industrial applications—Part 3:Fittings
WITHDRAWN published on 7.3.2003
Selected format:Code for design of heating, ventilation and air-condition
WITHDRAWN published on 1.1.1987
Selected format:Labels for packages of dangerous goods
WITHDRAWN published on 25.12.1990
Selected format:Food additive--26-ditertiarybutyl-p-cresol
WITHDRAWN published on 1.4.1980
Selected format:Quality management and quality assurance standards--Guidelines for selection and use
WITHDRAWN published on 1.1.1992
Selected format:Quality management systems—Fundamentals and vocabulary
WITHDRAWN published on 28.12.2000
Selected format:Latest update: 2025-12-18 (Number of items: 2 252 678)
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