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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
Piano wire rods
WITHDRAWN published on 1.1.1984
Selected format:Stainless steel wire rods
WITHDRAWN published on 30.4.1984
Selected format:Stainless steel wire rods
WITHDRAWN published on 19.11.2002
Selected format:Carbon spring steel wires
WITHDRAWN published on 31.3.1989
Selected format:Cold-drawn non-alloy steel wire for springs
WITHDRAWN published on 30.10.2009
Selected format:Piano wire
WITHDRAWN published on 1.1.1984
Selected format:Carbon spring steel wire for significant use
WITHDRAWN published on 10.10.1995
Selected format:Oil tempered carbon steel valve spring quality wires
WITHDRAWN published on 1.1.1984
Selected format:Zinc phosphide
WITHDRAWN published on 1.1.1980
Selected format:Oil tempered carbon steel spring wires
WITHDRAWN published on 1.1.1984
Selected format:Latest update: 2026-01-28 (Number of items: 2 257 539)
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