Steel-cored aluminium stranded conductor is stranded together by hard round aluminum conductor and galvanized steel conductor (or galvanizing-aluminized steel conductor). Steel-cored aluminium stranded conductor has characteristics like simple structure, low construction cost of circuit, easy installation and maintenance, large transmission capacity, etc. And it’s easy to be laid under special geographic conditions like crossing rivers and valleys, etc. It’s compliant for miscellaneous voltage classes of overhead transmission line.