Gem Bids For 2331 Porcelain Insulators For Overhead Power Lines With A Nominal Voltage Greater Than 1000 V As Per Is 731 Wire; Sty Gi 712 Swg In Kg Arrester; 7.2kv 10ka W Insulating Base Wire; Gi 10swg Rod; Stay 58in Gi Wanchr Rod Plt Turn