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Standards GB - Chinese national standards - Page 4179

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

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GB/T 42658.4-2023

Surface chemical analysis—Guidelines to sample handling, preparation and mounting—Part 4:Reporting information related to the history, preparation, handling and mounting of nano-objects prior to surface analysis

Standard published on 6.8.2023

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GB/T 42659-2023

Surface chemical analysis—Scanning probe microscopy—Determination of geometric quantities using SPM: Calibration of measuring systems

Standard published on 6.8.2023

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GB/T 4266-2004

Detachable pilots for use with counterbores and countersinks

Standard published on 10.2.2004

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166.80 USD

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GB/T 42660-2023

Aerosol particle number concentration—Calibration of condensation particle counters

Standard published on 6.8.2023

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GB/T 42661-2023

Corrosion of metals and alloys—Test method for determining susceptibility to stress corrosion of steel reinforcement in simulated marine environment

Standard published on 6.8.2023

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GB/T 42662-2023

Non-destructive testing of steel tubes—Automated ultrasonic testing for the detection of laminar imperfections in strip/plate used for the manufacture of welded steel tubes

Standard published on 6.8.2023

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GB/T 42663-2023

Water footprint assessment requirement for iron and steel industry

Standard published on 6.8.2023

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GB/T 42664-2023

Non-destructive testing of steel tubes—Automated ultrasonic testing of the weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections

Standard published on 6.8.2023

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GB/T 42665-2023

Test method for spherical indentation strength of porous ceramics

Standard published on 6.8.2023

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