A number of national standards and national standard samples developed by Chalco Group were approved and released

Recently, the General Administration of Market Regulation and the National Standards Committee jointly issued National Standards Announcement No. 10 and No. 11 of 2021, and the Ministry of Housing and Construction issued Announcement No. 122 of 2021, approving the release of a number of national standards and national standard samples. Four national standards and five national standard samples developed by the member enterprises of Chalco Group were approved and released.

Among the four national standards, "Copper and Copper Alloy Foil" edited by Luoyang Copper Processing and "Processed Nickel and Nickel Alloy Grades and Chemical Composition" edited by Chalco Shenga were revised on the basis of GB/T 5187-2008 and GB/T 5235-2007, respectively, to meet the needs of product development. The national standard "High Strength and High Toughness Al-Zn-Mg-Cu System Aluminum Alloy Plate" formulated by Dongqing is of great practical significance to solve the problem of independent R&D and application of aluminum alloy for aviation in China, and to regulate and promote the R&D and application of key materials of aluminum alloy in China. The "Process Design Standard for Antimony Smelting Plant" (No. GB51445-2021, to be implemented from December 1, 2021) edited by Changsha Institute. Some of the provisions are mandatory and strictly enforced) applies to the process design of new, expanded and rebuilt antimony smelters, which is conducive to standardizing the process design of antimony smelters, promoting technological progress, achieving economic rationality, energy saving and environmental protection, and reliability.

The five national standard samples "4XXX series aluminum alloy spectral series standard sample" "casting aluminum alloy 360A.1 spectral single point standard sample" "aluminum alloy 5182 spectral single point standard sample" "aluminum alloy 5005 spectral single point standard sample" "pure aluminum 1080 spectral single point standard sample" are developed by Southwest Aluminum, valid for 15 years.

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