Tender For nctps ii mi circle bm division 600 mw air preheater 1b annual overhaul works of replacement of the existing - nctps – ii - m-i circle –bm division – 600 mw – air preheater 1b – annual overhaul works of replacement of the existing wornout hot end heatingelementbaskets with new, replacement of existing eroded & damaged cold end diaphragm plate and reconditioning of existing eroded & damaged hot end diaphragm plate in aph 1b during the year 2025-26.