REPAIR/REPLACEMENT OF DI/CI/PPR PIPE LINES & CONNECTED ITEMS OF WORK AND REPAIR AND MAINTENANCE TO PUMP SETS, MOTOR, CHLORONOME PLANTS AND WATER TREATMENT PLANTS AT 273 SU AND 20 WING AFS AND REPAIR AND MAINTENANCE TO ISOLATION TRANSFORMERS, VOLTAGE STABILIZERS, OVER HEAD LINES, PAINTING OF STEEL POLES AND ALLIED WORKS AT 46 WEU AND 20 WING AFS BAGDOGRA UNDER GE (AF) BAGDOGRA