组合使用关键词、标准类型、状态与 ICS 分类，快速定位所需国家标准。
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GB/T 6609.35-2023
Chemical analysis methods and determination of physical performance of alumina—Part 35: Determination of specific surface area—Nitrogen adsorption method
GB/T 6609.27-2023
Chemical analysis methods and determination of physical performance of alumina—Part 27: Particle size analysis—Sieves method
GB/T 6609.25-2023
Chemical analysis methods and determination of physical performance of alumina—Part 25: Method for the determination of tapped and untapped density
GB/T 4291-2017
GB/T 24487-2022
Alumina
GB/T 6609.2-2022
Chemical analysis methods and determination of physical performance of alumina—Part 2: Determination of loss of mass at 300 ℃ and 1000 ℃
GB/T 6609.30-2022
Chemical analysis methods and determination of physical performance of alumina—Part 30: Determination of trace elements—Wavelength dispersive X-ray fluorescence spectrometric method
GB/T 6609.6-2018
Chemical analysis methods and determination of physical performance of alumina—Part 6：Determination of potassium oxide content
GB/T 6609.19-2018
Chemical analysis methods and determination of physical performance of alumina—Part 19：Determination of lithium oxide content—Flame atomic absorption spectrometry method
GB/T 6609.12-2018
Chemical analysis methods and determination of physical performance of alumina—Part 12：Determination of zinc oxide content—Flame atomic absorption spectrometry method
GB/T 6609.1-2018
Chemical analysis methods and determination of physical performance of alumina—Part 1：Determination of trace elements content—Inductively coupled plasma atomic emission spectrometry method
GB/T 4292-2017
Aluminium fluoride
GB/T 4291-2017
Synthetic cryolite
GB/T 33908-2017
Technical specification for testing of liquidus temperature of the electrolyte
GB/T 26930.9-2014
Carbonaceous materials used in the production of aluminium―Pitch for electrodes―Part 9：Determination of sulful content by the bomb method
GB/T 26930.8-2014
Carbonaceous materials used in the production of aluminium—Pitch for electrodes—Part 8：Determination of coking value
GB/T 26930.7-2014
Carbonaceous materials used in the production of aluminium—Pitch for electrodes—Part 7：Determination of softening point(Mettler softening point method)
GB/T 26930.6-2014
Carbonaceous materials used in the production of aluminium—Pitch for electrodes—Part 6：Determination of ash
GB/T 26930.13-2014
Carbonaceous materials used in the production of aluminium―Pitch for electrodes―Part 13：Determination of C/H ratio in the quinoline-insoluble fraction
GB/T 26930.12-2014
Carbonaceous materials used in the production of aluminium―Pitch for electrodes―Part 12：Determination of volatile matter content