bids are invited for bid for services - item no 11 fabrication of structures consisting rolled sections of channels beams angles plates structural pipe etc sch qty 30000 kg , custom bid for services - item no 12 fabrication of structures consisting rolled sections of channels beams angles plates structural pipe etc sch qty 2000 kg , custom bid for services - item no 13 drilling of holes of required size with carbide tipped drill bit diamond drill bit wherever required and fixing of anchor bolts up to m20 size sch qty 100 no , custom bid for services - item no 14 drilling of holes of required size with carbide tipped drill bit diamond drill bit wherever required and fixing of anchor bolts sch qty 300 no , custom bid for services - item no 15 drilling of holes of required size with carbide tipped drill bit diamond drill bit wherever required and fixing of anchor bolts sch qty 200 no , custom bid for services - item no 16 drilling of holes of required size with carbide tipped drill bit diamond drill bit wherever required and fixing of anchor bolts sch qty 30 no , custom bid for services - item no 17 identification marking cutting and removal of pipes pipe fittings valves from field location and shifting to the engineers stores sch qty 5000 inch meter , custom bid for services - item no 18 identification marking cutting and removal of cs and ss structural items from field location and shifting to the engineers stores sch qty 20000 kg , custom bid for services - item no 19 cleaning of metallic structures pipes equipment and associated structures surface preparation with grit blasting application of zinc rich primer paint sch qty 1200 sqm total quantity :