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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
Transmission roller chains for oil-field drilling rigs
WITHDRAWN published on 1.1.1983
Selected format:Cold-drawn or cold-rolled precision seamless steel tubes
WITHDRAWN published on 25.10.2000
Selected format:Seamless cold-drawn or cold-rolled steel tubes for precision applications
WITHDRAWN published on 30.10.2009
Selected format:PE PPPETcoated paper and board for food packaging
WITHDRAWN published on 7.6.2018
Selected format:Plain carbon steel pipes for electric wire
WITHDRAWN published on 22.2.1988
Selected format:Type P3 galvanized metallic flexible hose
WITHDRAWN published on 2.5.1983
Selected format:Type S brazed stainless steel flexible metallic hose
WITHDRAWN published on 2.5.1983
Selected format:Cold-rolled steel strip for bicycle chain
WITHDRAWN published on 1.1.1983
Selected format:Cold-rolled carbon steel wide strips and sheets for bicycle
WITHDRAWN published on 1.1.1989
Selected format:Hot-rolled carbon steel and low alloy wide strips and plates, sheets for bicycle
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-01-19 (Number of items: 2 257 233)
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