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GB/T 13748.3-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 3：Determination of lithium,silver content—Flame atomic absorption spectrometry method
GB/T 13748.2-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 2：Determination of tin,beryllium,copper,nickel and titanium content—Spectrophotometric method
GB/T 13748.1-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 1:Determination of aluminium content
GB/T 2080-2026
Indexable hard material inserts with rounded corners,with partly cylindrical fixing hole—Dimensions
GB/T 5153-2026
Designation and chemical composition of wrought magnesium and magnesium alloy
GB/T 6609.11-2026
Chemical analysis methods and determination of physical performance of alumina—Part 11: Determination of manganese oxide and magnesium oxide contents—Flame atomic absorption spectrometric method
GB/T 6609.7-2026
Chemical analysis methods and determination of physical performance of alumina—Part 7:Determination of titanium dioxide, chromium sesquioxide, cupric oxide,fluorine, chlorine, boron trioxide, phosphorus pentoxide, sulfate contents—Spectrophotometry method
GB/T 7999-2026
Photoelectric direct reading atomic emission spectrometric method of aluminium and aluminium alloys
GB/T 4436-2026
Tolerances on form and dimensions of wrought aluminium and aluminium alloy tubes
GB/T 3199-2026
Packing, marking, transporting and storing of wrought aluminium and aluminium alloy products
GB/T 16866-2026
Dimensions and tolerances of copper and copper alloy seamless tubes
GB/T 470-2026
Zinc ingots
GB/T 13748.21-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 21: Determination of elements content—Photoelectric direct reading atomic emission spectrometric method
GB/T 47629-2026
Quality evaluation scheme of steel bars for the steel reinforcement of concrete
GB/T 33817-2026
Method for determination of the carbon film and carbon content on the inner surface of copper and copper-alloy tube
GB/T 708-2026
Dimension, shape, weight and tolerance for cold-rolled steel sheet and strip
GB/T 31938-2026
Steel plate，sheet and strip for ore powder pulp slurry pipeline
GB/T 24513.2-2026
Corrosion of metals and alloys—Classification of low corrosivity of indoor atmospheres—Part 2: Determination of corrosion attack in indoor atmospheres
GB/T 24513.1-2026
Corrosion of metals and alloys—Classification of low corrosivity of indoor atmospheres—Part 1: Determination and estimation of indoor corrosivity
GB/T 706-2026
Hot rolled section steel