... Tube 1.Inner Diameter:14-1000mm 2.Length: 10mm 3.High strength for application. 4.Test:SGS,National test5. ... Labs3.Application: Power Transformer,Current Transformer,Hollow Insulators, Bushing, Surge Arrester, High-voltage Current Limiting Fuse, On-load tap changer, ... Strength 320MPa4 Insulation Resistance ≥5*104 Ω.M5Surface Flashover Voltage ≥12kV 5. Customers ABB,LAPP,MACLEAN,SIEMENS,TYCO,ETC The ...