bids are invited for custom bid for services - refilling of co2 gas as per scope of work amc of refilling and hydro testing of co2 fire extinguishers at ongc assam asset , custom bid for services - 2refilling of co2 gas cartridge cap 200 gms amc of refilling and hydro testing of co2 fire extinguishers at ongc assam asset , custom bid for services - 3hydro testing of co2 gas cylinder cap1 kg to 65 kg amc of refilling and hydro testing of co2 fire extinguishers at ongc assam asset , custom bid for services - transportation of co2 cylinder cartridges from cfs svsto and fro165 kg cap in one lot 100150 co2 cylinders 50 nos of co2 cartriges of 200 gm , custom bid for services - 5replacement of control valve co2 cylinder if required , custom bid for services - repairing of control valve co2 cylinder if required , custom bid for services - painting of co2 cylinder , custom bid for services - providing of safety pin with chain safety pin holder