bids are invited for at kolkata airport copper plate , copper strip , copper wire -non stranded , copper rod lightning arrestor , insulated copper wire , gi pipe , pvc pipe , heavy duty pvc pipe plastic corrugated hose , salt , charcoal , electrical extension board , self supporting heavy duty folding ladder , battery stand , copper clad rod , 3-core electrical cable , steel guide wire for laying inside gi pipe , weather proof cpvc box , multi strand braided copper wire bare , frp poles with 4 bolt mounting pedestals , ss pulley with hook , strain insulator , glass or ceramic , straining screws with anchor bolts , steel guy wire -multistrand , bulldog grips for 8mm steel or copper rope , earth distribution platecopper strip , 12mm od ss full thread stud , dme rf cable connectors n-type male , nut , washer supply of earthing material and lightning arrestor total quantity : 5445