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Standards GB - Chinese national standards - Page 4728
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 4698.21-2019
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 21: Determination of manganese, chromium, nickel, aluminum, molybdenum, tin, vanadium, yttrium, copper and zirconium content—Atomic emission spectrometry
Standard published on 4.6.2019
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GB/T 4698.22-2017
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Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 22Determination of niobium content—5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry
Standard published on 29.9.2017
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GB/T 4698.23-2017
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Methods for chemical analysis of titanium spongetitanium and titanium alloys—Part 23Determination of palladium content—Stannous choride-potassium iodide spectrophotometry and inductively coupled plasma atomic emission spectrometry
Standard published on 29.9.2017
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GB/T 4698.24-2017
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 24Determination of nickel content—Dimethylglyoxime spectrophotometry and inductively coupled plasma atomic emission spectrometry
Standard published on 29.9.2017
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GB/T 4698.25-2017
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 25Determination of chlorine content—Silver chlorin spectrophotometry
Standard published on 29.9.2017
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GB/T 4698.26-2024
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Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 26: Determination of tantalum and tungsten content—Inductively coupled plasma atomic emission spectrometry
Standard published on 26.10.2024
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GB/T 4698.27-2017
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 27Determination of neodymium content—Inductively coupled plasma atomic emission spectrometry
Standard published on 29.9.2017
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GB/T 4698.28-2017
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 28Determination of ruthenium content—Inductively coupled plasma atomic emission spectrometry
Standard published on 29.9.2017
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GB/T 4698.29-2024
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Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 29:Determination of aluminum,carbon,chromium, copper,iron,manganese,molybdenum,nickel,silicon,tin,vanadium and zirconium contents—Spark atomic emission spectrometry
Standard published on 28.11.2024
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GB/T 4698.3-2017
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 3Determination of silicon content—Molybdenum blue spectrophotometry
Standard published on 29.9.2017
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