Round-wire concentric stranded overhead conductors are mainly used for overhead laying in open fields as power transmission and distribution lines. Aluminum alloy stranded wire and steel-aluminum alloy stranded wire have advantages such as high tensile strength, good heat resistance, high current carrying capacity, and corrosion resistance. The mechanical and electrical properties of this product comply with GB/T1179.2017 "Round-wire concentric stranded overhead conductors" and are modified to adopt IEC61089:1991 "Round-wire concentric stranded overhead conductors" and its amendment (1997).