bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - industry unit; installation of sand and carbon filter on non- ammoniacal effluent header at ammonia plant at rcf thal; service provider - fabrication of pipe line joints cs up to 5mmthickness as per the scope of work. , fabrication of cs pipe line joints having wallthickness above 5 mm and upto 10 mm asper the scope of work. , fabrication of cs pipe line joints having wallthickness above 10 mm as per the scope ofwork. , erection of the flanged gav valves upto 4x150# , erection of the flanged gav valves 6 x 150#upto 12 x 150# , shifting and installation of sand filter , shifting and installation of activated carbonfilter , erection of pipeline , supply and erection of scaffolding as per thescope of work , skilled manpower for loading and unloadingof carbon and sand. , application of protective paint