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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
Thermoplastic pipes--Determination of tensile properties--Part 1: General test method
Standard published on 5.3.2003
Selected format:Thermoplastic pipes--Determination of tensile properties--Part 2: Pipes made of unplasticized poly(vinyl chloride)(PVC-U)chlorinated poly(vinyl chloride)(PVC-C)and high-impact poly(vinyl chloride)(PVC-HI)
Standard published on 5.3.2003
Selected format:Thermoplastic pipes--Determination of tensile properties--Part 3: Polyolefin pipes
Standard published on 5.3.2003
Selected format:Plastics piping systems - Plastics components - Determination of dimensions
Standard published on 19.8.2008
Selected format:Test method for specular gloss of plastics
Standard published on 13.2.1988
Selected format:Test method for peel force of flexible laminated plastics
Standard published on 13.2.1988
Selected format:Pendulum impact resistance of plastic film
Standard published on 11.9.2015
Selected format:Taper pins with external thread
Standard published on 26.9.2000
Selected format:Determination of water absorption of rigid cellular plastics
Standard published on 17.11.2005
Selected format:Test method for dimensional stability of rigid cellular plastics
Standard published on 4.1.2008
Selected format:Latest update: 2026-04-24 (Number of items: 2 274 650)
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