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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
Mechanical vibration of non-reciprocating machines—Measurements on rotating shafts and evaluation criteria—Part 3:Coupled industrial machines
WITHDRAWN published on 8.4.1999
Selected format:Mechanical vibration of non-reciprocating machines—Measurements on rotating shafts and evaluation criteria—Part 4:Gas turbine sets
WITHDRAWN published on 8.4.1999
Selected format:Mechanical vibration of non-reciprocating machines—Measurements on rotating shafts and evaluation criteria—Part 5:Machine sets in hydraulic power generating and pumping plants
WITHDRAWN published on 20.5.2002
Selected format:Experimental determination of mechanical mobility—Basic definitions and transducers
WITHDRAWN published on 8.5.1989
Selected format:Vibration and shock—Experimental determination of mechanical mobility—Part 1:Basic definitions and transducers
WITHDRAWN published on 2.6.2006
Selected format:Experimental determination of mechanical mobility—Measurements using single-point translation excitation with an attached vibration exciter
WITHDRAWN published on 8.5.1989
Selected format:Experimental determination of mechanical mobility Measurements using impact excitation
WITHDRAWN published on 7.12.1992
Selected format:Shell machine reamers
WITHDRAWN published on 6.12.1973
Selected format:Machining allowances on castings
WITHDRAWN published on 1.1.1989
Selected format:Mass tolerances for castings
WITHDRAWN published on 6.5.1989
Selected format:Latest update: 2025-12-28 (Number of items: 2 253 436)
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