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Standards GB - Chinese national standards - Page 4528

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 45377-2025

Non-destructive testing—Long-range inspection of above-ground pipelines and plant piping using guided wave testing with axial propagation

Standard published on 28.3.2025

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GB/Z 45378-2025

Non-destructive testing—Methods for absolute calibration of acoustic emission transducers by the reciprocity technique

Standard published on 28.3.2025

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GB/T 45379-2025

Five-axis hybrid electrical discharge and arc milling machines—Testing of the accuracy

Standard published on 28.3.2025

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GB/T 45380-2025

Non-destructive testing—Nonlinear ultrasonic testing method of microstructure damage

Standard published on 28.3.2025

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GB/T 45381-2025

Gantry-type die sinking electrical discharge machines with movable crossbeam—Testing of the accuracy

Standard published on 28.3.2025

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GB/T 45382-2025

Tools for moulding—Guide pillars, straight and shouldered, and locating guide pillars, shouldered

Standard published on 28.3.2025

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GB/T 45383-2025

Tools for moulding—Sprue pullers

Standard published on 28.3.2025

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GB/T 45384-2025

Safety and control devices for gas burners and gas-burning appliances—Particular requirements—Pneumatic gas/air ratio pressure regulator

Standard published on 28.3.2025

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GB/T 45385-2025

Safety and control devices for gas burners and gas-burning appliances—Particular requirements—Vent valves

Standard published on 28.3.2025

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GB/T 45386.1-2025

Electrochemical technical specification for industrial wastewater treatment—Part 1General

Standard published on 28.3.2025

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Entries shown from 45270 to 45280 out of a total of 94224 entries.

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