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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
Vanadium-Nitrogen alloy-Determination of nitrogen content—The distillation-neutralization titration method
WITHDRAWN published on 30.10.2009
Selected format:Vanadium—Nitrogen alloy—Determination carbon of content—The infrared absorption method
WITHDRAWN published on 30.10.2009
Selected format:Vanadium-Nitrogen alloy—Determination of phosphorus content—The bismuth molybdenum blue spectrophotometry method
WITHDRAWN published on 30.10.2009
Selected format:Vanadium-Nitrogen alloy—Determination of sulfur content—The infrared absorption method
WITHDRAWN published on 30.10.2009
Selected format:Vanadium-Nitrogen alloy—Determination of oxygen content—The infrared absorption method
WITHDRAWN published on 30.10.2009
Selected format:Vanadium-Nitrogen alloy—Determination of silicon,manganese,phosphorus,aluminum content—Inductively coupled plasma atomic emission spectrometric method
WITHDRAWN published on 30.10.2009
Selected format:Metallic materials—Tensile testing—Method of test in liquid helium
WITHDRAWN published on 30.10.2009
Selected format:Hot-rolled wire rods for prestressing steel bars of concrete
WITHDRAWN published on 30.10.2009
Selected format:Stainless steel wires for spring
WITHDRAWN published on 30.10.2009
Selected format:Financial information technology—Data interface of accounting software—Part 1:Enterprise
WITHDRAWN published on 30.6.2010
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
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