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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
Sintered metal friction materials--Determination of transverse rupture strength
WITHDRAWN published on 9.4.2002
Selected format:Sintered metal friction materials--Determination of tension strength
WITHDRAWN published on 22.2.1989
Selected format:Sintered metal friction materials--Determination of tensile strength
WITHDRAWN published on 9.4.2002
Selected format:Sintered metal friction materials--Determination of compression strength
WITHDRAWN published on 22.2.1989
Selected format:Sintered metal friction materials--Determination of compressive strength
WITHDRAWN published on 9.4.2002
Selected format:Sintered metal friction materials--Determination of apparent hardness
WITHDRAWN published on 22.2.1989
Selected format:Sintered metal friction materials--Determination of apparent hardness
WITHDRAWN published on 9.4.2002
Selected format:Technical conditions of power metallurgy oil pump gear
WITHDRAWN published on 1.1.1989
Selected format:Technical condition of power metallurgy oil pump rotor for internal combustion engine
WITHDRAWN published on 1.1.1989
Selected format:Test method for frictional characteristics of wet sintered metal friction materials on the test bench
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-06-09 (Number of items: 2 281 484)
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