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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
Hot-rolled spring steel sheets and plates
WITHDRAWN published on 30.10.2009
Selected format:Test methods for asphalt waterproof roll roofing—The general rules
WITHDRAWN published on 31.3.1989
Selected format:Test methods for asphalt waterproof roll roofing—Saturated and coated bitumen amount of asphalt
WITHDRAWN published on 31.3.1989
Selected format:Test methods for asphalt waterproof roll roofing—Water impermeability of asphalt
WITHDRAWN published on 31.3.1989
Selected format:Test methods for asphalt waterproof roll roofing—Water absorption of asphalt
WITHDRAWN published on 31.3.1989
Selected format:Test methods for asphalt waterproof roll roofing—Heat resistance of asphalt
WITHDRAWN published on 31.3.1989
Selected format:Test methods for asphalt waterproof roll roofing—Tensile strength of asphalt
WITHDRAWN published on 31.3.1989
Selected format:Test methods for asphalt waterproof roll roofing—Flexibility of asphalt
WITHDRAWN published on 31.3.1989
Selected format:Cold rolled stainless steel sheets and plates
WITHDRAWN published on 16.11.1992
Selected format:Cold rolled stainless steel plate, sheet and strip
WITHDRAWN published on 9.3.2007
Selected format:Latest update: 2026-01-25 (Number of items: 2 257 482)
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