Specification :

This product is applied to electric railway tunnel with complex operating condition. It could effectively prevent from pollution flash over accident and reduce workload of cleaning and maintenance. During working, it not only endures tensile force (long rod shaped insulator PQX1~PQX4), but also endures twisting force (line scull type insulator PQX1-PQX5). For its small size, when the net space of tunnel is small, especially in heavy pollution area, it can’t be substituted by ceramic or glass insulator.