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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
The assessment of profile grades of steel surface before application of paint and related products—Comparator
WITHDRAWN published on 13.12.1991
Selected format:Ethylene for industrial use—Sampling in the liquid and the gaseous phase
WITHDRAWN published on 9.12.1991
Selected format:Coating for optical element--Neutral-filter coating
WITHDRAWN published on 1.1.1989
Selected format:Propylene and butadiene for industrial use—Sampling in the liquid phase
WITHDRAWN published on 9.12.1991
Selected format:Butadiene for industrial use—Specification
WITHDRAWN published on 9.12.1991
Selected format:Butadiene for industrial use—Specification
WITHDRAWN published on 19.6.2008
Selected format:Classification of coated hardmetal and main technical specifications for coating
WITHDRAWN published on 13.12.1991
Selected format:Higher purity copper cathode—Determination of selenium and tellurum contents—Catalytic oscillopolarographic method
WITHDRAWN published on 14.12.1991
Selected format:Higher purity copper cathode—Determination of zinc content—Flame atomic absorption spectrometric method
WITHDRAWN published on 14.12.1991
Selected format:Higher purity copper cathode—Determination of silicon content—Molybdenum blue spectrophotometric method
WITHDRAWN published on 14.12.1991
Selected format:Latest update: 2026-04-17 (Number of items: 2 274 270)
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