The metal components on power lines, such as common iron towers, wire clamps, wire clamps, stay wires, power clamps, power cross arms, etc., are generally used by power supply departments, power plants, or industrial and mining enterprises when building new lines.

The powerful power produced by the power plant is delivered to users through step-up Electrical substation, overhead transmission line, step-down Electrical substation and low-voltage distribution line. The connection of equipment and conductor, conductor and conductor, transmission line conductor and insulator in the power distribution device of step-up Electrical substation and step-down Electrical substation, and the insulator are connected in a string. The accessories used for the self protection of conductor and insulator are called power fittings.

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