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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
Heat loss test for thermal insulation structure and evaluation methods for thermal insulation efficiency of district heating pipes
WITHDRAWN published on 31.7.2012
Selected format:Pilot pin of cold press dies--Pilot pin, type A
WITHDRAWN published on 1.1.1981
Selected format:Pilot pin of cold press dies--Pilot pin, type B
WITHDRAWN published on 1.1.1981
Selected format:Pilot pin of cold press dies--Pilot pin, type C
WITHDRAWN published on 1.1.1981
Selected format:Pilot pin of cold press dies--Pilot pin, type D
WITHDRAWN published on 1.1.1981
Selected format:Pitch punch and stock guide set for cold press dies--Pitch punch
WITHDRAWN published on 1.1.1981
Selected format:Pitch punch and stock guide set for cold press dies--Stop for pitch punch, type A
WITHDRAWN published on 1.1.1981
Selected format:Pitch punch and stock guide set for cold press dies--Stop for pitch punch, type B
WITHDRAWN published on 1.1.1981
Selected format:Pitch punch and stock guide set for cold press dies--Stop for pitch punch, type C
WITHDRAWN published on 1.1.1981
Selected format:Pitch punch and stock guide set for cold press dies--Stock guide plate
WITHDRAWN published on 1.1.1981
Selected format:Latest update: 2026-04-10 (Number of items: 2 271 455)
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