In overhead power lines and substations, the function of connecting fittings is as follows: first, hanging the suspension insulator string on the tower with the connecting fittings; second, connecting the suspension clamp for the straight pole and tower or the strain clamp for the non-linear tower with the insulator string with the connecting hardware. J. other connecting fittings of the guyed tower and the anchorage of the tower should also be used.

Connecting fittings are mainly used for overhead power lines or substations. The insulator of tension clamp of conductor or lightning conductor is connected by connecting fittings, and the lightning conductor clamp is connected with tower. According to the different installation conditions, it is divided into special connection fittings and general connection fittings. Special connection fittings refer to ball head hanging ring and bowl head hanging plate connected with insulator. The universal connecting fittings are applicable to various situations. According to the classification of load tonnage, the same kind of fittings with the same load have interchangeability, and the connecting fittings with the same load and different types have interconnection.

The meaning of letter hanging board number in product model is as follows: