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The preformed fittings,original it is only the preformed armor rods developed in United States,and then base on this,it was widely developed into several series preformed fittings today,such as preformed tension clamp,preformed suspension clamp,preformed ties,spiral vibration Dampers,protective fittings etc.
Preformed fittings with its salient feature and excellent technical performance,are more and more widely used in electrical and OPGW,ADSS industry.The preformed fittings have used in the ultra high voltage transmission line for years and have long-term stable operation record.In the world,million kilometers OPGW and ADSS optic cable transmission line are installed and used preformed fittings.
Preformed fittings can convenient to be installed quickly,it could be manual installation without any special tools,this feature increase the preformed fittings install speed and efficiency of labours.The preformed fittings special structure design make it has the operation tension after install,make the preformed armor rods will always In the state more pull more tightly,then avoid the problems of clamp holding strength decrease and contact resistance increase.Preformed fittings are made from the same material with conductor and earth wire,decrease the electro erosion,increase of the preformed fittings service life.
