bids are invited for irugur top installation s and i of single spike air terminals , s and i of threaded base suppor , s and i of metal clamp for vertical rod connection , s and i roof conductor for parapet , s and i roof conductor for air termination , s and i of stainless steel or , s and i of straight connector , s and iof t connector , s and i of x connector , s and i of fixed type conductor , s and iof conductor for bonding of air termina , s and i of 8 mm dia aluminium round conducto , s and i of 25x6mm gi strip down conductors , s and i of wall conductor holder for holding of , s and i of test clamp , s and i of expansion piece , s of earthing chemical , s and i of earth rod clamp , s and i of 25x6mm gi strip , supply high quality adhesive of lord parker make lightning protection system at licensed area bpcl total quantity : 7689