Nowadays, whether in big cities or small towns, buses have become very common, and trams have gradually spread to every corner.
In daily travel, it is common to see woven tram lines, consisting of copper tram lines, collector assemblies, copper feeder clamps, and insulator suspension porcelain bottles. Contact some wires, also known as motor frame wires or gantry crane wires. The standard is divided into two standard specifications: iron standard copper contact wire and national standard copper contact wire, based on tensile strength, elongation, number of twisting turns, number of repeated bending radii, winding diameter turns, standard section, size and deviation, angle and deviation, calculated cross-sectional area, and resistivity.
According to the production and material category, it can be divided into copper alloy contact wire: encapsulated steel aluminum composite tram wire: exposed steel aluminum composite tram wire, steel core aluminum alloy composite tram wire, and aluminum alloy tram wire.