2、 Execution standard: GB/T 1179-2017 Round Wire Concentric Twisted Frame Empty Wire

3、 Product introduction: It refers to a reinforced wire with single or multiple layers of aluminum stranded wire twisted outside a galvanized steel core wire. It has a steel "core" inside and is wrapped around the steel core with aluminum wire twisted together on the outside; Steel core mainly serves to increase strength, while aluminum stranded wire mainly serves to transmit electrical energy;

4、 Product features: This product has a simple structure, good conductivity and sufficient mechanical strength, high tensile strength, easy installation and maintenance, low line cost, and large transmission capacity.

5、 Scope of application: Suitable for fixed overhead laying with large spans, and also conducive to laying across special geographical conditions such as rivers and valleys. Therefore, it is widely used in overhead transmission and distribution lines of various voltage levels.

6、 Symbol description:

Concentric Twisting - J

Aluminum wire - L, L1, L2, L3

Steel core - G1A, G2A, G3A