bids are invited for supply of material for construction of earthing pits , supply of copper plate , supply of copper strip , supply of salt , supply of charcoal , supply of pvc pipe , supply of material for construction of concrete box with lid , brazing of interconnection , supply of 50 sq mm multi-strand insulated copper wire , supply of 16 sq mm multi-strand insulated copper wire , supply of 10 sq mm multi-strand insulated copper wire , supply of equipotential earth bus bar , supply of material for construction of inspection chamber , supply at bhopal airport of 100 mm gi pipe , supply of 40 mm gi pipe , soiltreatment , supply of upvc pipe , supply of frp pole ,supply of guy wires , supply of lightining arrestor verticalair terminal , supply of telephone line spd , supply of dataline cat6 rj 45 spd , supply of co-axial n type spd ,supply of class c spd single phase netural , supply ofspare module of class c spd , sitc of 20 nos of copperplate earthing system, 08 nos of lightening arrestors with08 copper plate earthing system and various surgeprotection devices including all chargessitc of copper plate earthing system lightening arrestor spd total quantity : 11326