bids are invited for 62758 oxygen and da gas supply and delivery of commercial industrial oxygen gas as per is 309 2005 on as and when required basis in npcil cylinders to npcil kaiga plant site , replacement of damaged cylinder valves as and when required basis for cylinder of commercial industrial oxygen gas as mentioned above , replacement of defective cylinder spindle on as and when required basis for cylinder of commercial industrial oxygen gas as mentioned above , hydro testing including purging of cylinders internal inspection testing on as and when required basis for cylinder of commercial industrial oxygen gas as mentioned above , painting of cylinders minimum 2 coats of good quality paint to be applied within an interval of 8 hrs on as and when required basis , supply and delivery of dissolved acetylene gas as per is 308 1988 on as and when required basis in npcil cylinders to kaiga plant , replacement of damaged cylinder valves as and when required basis for cylinder of dissolved acetylene gas as mentioned above , replacement of defective cylinder spindle defective cylinder spindle to be returned to npcil kaiga on as and when required basis for cylinder of dissolved acetylene gas as mentioned above , hydro testing including purging of cylinders internal inspection testing on as and when required basis for cylinder of dissolved acetylene gas as mentioned above , painting of cylinders minimum 2 coats of good quality paint to be applied within an interval of 8 hrs on as and when required basis for cylinder of dissolved acetylene gas as mentioned above total quantity : 5080