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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
Technical specifications of manufacture of pressure hull structure for submersibles and underwater equipments
WITHDRAWN published on 21.9.1989
Selected format:Technical specifications of material of pressure hull structure for submersibles and underwater equipments
WITHDRAWN published on 21.9.1989
Selected format:Marine oil heater with pin tube
WITHDRAWN published on 1.1.1989
Selected format:Specification for installation of ram type hydraulic steering gear
WITHDRAWN published on 1.1.1989
Selected format:Works trial method for marine hydraulic jib-crane
WITHDRAWN published on 1.1.1989
Selected format:Dissolved acetylene cylinders
WITHDRAWN published on 21.9.1989
Selected format:Dissolved acetylene cylinders
WITHDRAWN published on 6.3.2003
Selected format:Dissolved acetylene cylinders
WITHDRAWN published on 20.7.2011
Selected format:Methods of test for porous mass of dissolved acetylene cylinders
WITHDRAWN published on 21.9.1989
Selected format:Level type grease guns
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2025-11-14 (Number of items: 2 243 651)
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