bids are invited for earthing system and spd conventional lightning arrester 1m long , conventional type copper la 1.5m long , gi plus frp mast 3m , mounting brackets , copper strip 25x3mm , copper strip 25x3mm for laying through parapet , gi pipe 40mm b class , copper cable 70sqmm , down conductor 70sqmm , accessories , frp mast 4m long , conventional type earthing , equipotential earth bar , copper cable 35 sq mm , copper cable 10 sqmm , aviation obstruction lamp cable , frp mast 2m , la mast 5m , rf surge spd connector so 239 , rf surge spd connector 7 16 din , rf flexible pigtail , ict sitc of conventional lightning arresters conventional total quantity : 3740