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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
Testing metthods for screw pumps
WITHDRAWN published on 1.1.1988
Selected format:Hydraulic fluid power--Hose connector--Connecting dimension (Part 1--Flare type)
WITHDRAWN published on 18.4.1988
Selected format:Hydraulic fluid power--Hose connector--Connecting dimension (Part 2--Insert type)
WITHDRAWN published on 18.4.1988
Selected format:Connections for hydraulic fluid power and general use - Hose fittings - Part 2: Hose fittings with 24° cone connector ends
WITHDRAWN published on 26.9.2010
Selected format:Hydraulic fluid power--Hose connector--Connecting dimension(Part 3:Welding or quick-action type)
WITHDRAWN published on 18.4.1988
Selected format:Slip-Discharge screen centrifuges--Types and basic parameters
WITHDRAWN published on 1.1.1988
Selected format:Filter belt press--Types and basic parameters
WITHDRAWN published on 1.1.1988
Selected format:Determination of sound power level for noise emitted by reciprocating pump--Engineering method
WITHDRAWN published on 18.4.1988
Selected format:Dimension, shape, weight and tolerance for cold-drawn hexagonal steels
WITHDRAWN published on 1.1.1982
Selected format:Brocade and satin of silk fabrics
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2025-12-29 (Number of items: 2 253 390)
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