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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
Preparation of steel substrates before application of paints and related products—Tests for the assessment of surface cleanliness—Part 12:Field method for the titrimetric determination of water-soluble ferrous ions
WITHDRAWN published on 1.4.2008
Selected format:Preparation of steel substrates before application of paints and related products—Tests for the assessment of surface cleanliness—Laboratory determination of chloride on cleaned surfaces
WITHDRAWN published on 13.12.2001
Selected format:Preparation of steel substrates before application of paints and related products—Tests for the assessment of surface cleanliness—Part 6:Extraction of soluble contaminants for analysis—The Bresle method
WITHDRAWN published on 14.9.2005
Selected format:Small craft—Electrical devices—Lightning protection
WITHDRAWN published on 13.12.2001
Selected format:The passenger service signs for subway
WITHDRAWN published on 17.12.2001
Selected format:Shaking table test method of earthquake resistant performance for building curtain wall
WITHDRAWN published on 17.12.2001
Selected format:Earth-moving machinery—Definitions of dimensions and symbols—Part 1:Base machine
WITHDRAWN published on 17.12.2001
Selected format:Earth-moving machinery—Definitions of dimensions and symbols—Part 2:Equipment
WITHDRAWN published on 17.12.2001
Selected format:Specification for designing urban geographic information system
WITHDRAWN published on 19.12.2001
Selected format:High-carbon chromium bearing steel wires
WITHDRAWN published on 17.12.2001
Selected format:Latest update: 2025-07-07 (Number of items: 2 207 474)
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