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    GB/T 20975.4-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 4:Determination of iron content

    China National - GB Standards
    GB/T 20975.5-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 5：Determination of silicon content

    China National - GB Standards
    GB/T 20975.7-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 7:Determination of manganese content

    China National - GB Standards
    GB/T 20975.9-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 9:Determination of lithium content—Flame atomic absorption spectrometry

    China National - GB Standards
    GB/T 20975.10-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 10：Determination of tin content

    China National - GB Standards
    GB/T 20975.12-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 12: Determination of titanium content

    China National - GB Standards
    GB/T 20975.14-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 14：Determination of nickel content

    China National - GB Standards
    GB/T 20975.16-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 16：Determination of magnesium content

    China National - GB Standards
    GB/T 20975.18-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 18:Determination of chromium content

    China National - GB Standards
    GB/T 20975.22-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 22:Determination of beryllium content

    China National - GB Standards
    GB/T 20975.24-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 24：Determination of total rare earth content

    China National - GB Standards
    GB/T 20975.25-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 25：Determination of elements content—Inductively coupled plasma atomic emission spectrometric method

    China National - GB Standards
    GB/T 20975.35-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 35:Determination of tungsten content—Thiocyanate spectrophotometric method

    China National - GB Standards
    GB/T 20975.36-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 36:Determination of silver content—Flame atomic absorption spectrometry

    China National - GB Standards
    GB/T 20973-2020 Bentonite

    China National - GB Standards
    GB/T 20671.3-2020 Classification system and test methods for nonmetallic gasket materials—Part 3: Standard test method for fluid resistance of gasket materials

    China National - GB Standards
    GB/T 20671.5-2020 Classification system and test methods for nonmetallic gasket materials—Part 5: Standard test method for creep relaxation of gasket materials

    China National - GB Standards
    GB/T 20671.6-2020 Classification system and test methods for nonmetallic gasket materials—Part 6: Standard test method for adhesion of gasket materials to metal surfaces

    China National - GB Standards
    GB/T 19823-2020 Thermal spraying — Procedures for the application of thermally sprayed coatings for engineering components

    China National - GB Standards
    GB/T 18930-2020 Terminology for refractories

    China National - GB Standards
    GB/T 17360-2020 Microbeam analysis—Method of quantitative determination for low contents of silicon and manganese in steels using electron probe microanalyzer

    China National - GB Standards
    GB/T 16546-2020 General rules for packing, marking, transport, storage and quality certificates of shaped refractory

    China National - GB Standards
    GB/T 15579.10-2020 Arc welding equipment—Part 10:Electromagnetic compatibility (EMC) requirements

    China National - GB Standards
    GB/T 15545-2020 General rules for packing, marking, transport, storage and quality certificates of unshaped refractory

    China National - GB Standards
    GB/T 15343-2020 Methods for chemical analysis of talc

    China National - GB Standards
    GB/T 14563-2020 Specification and test method of kaolin clay

    China National - GB Standards
    GB/T 13912-2020 Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods

    China National - GB Standards
    GB/T 12967.1-2020 Test methods for anodic oxidation coatings and organic polymer coatings of aluminium and aluminium alloys―Part 1: Measurement of abrasion resistance

    China National - GB Standards
    GB/T 11376-2020 Metallic and other inorganic coatings—Phosphate conversion coating of metals

    China National - GB Standards
    GB/T 8763-2020 Test methods for gas absorption characteristic of non-evaporation gettering materials and products

    China National - GB Standards

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