Annual Maintenance of 2200/1600/1200 mm dia MS gravity main from Sahebnagar to Mailardevpally, 1200/1000 mm dia MS gravity main from Champapet to Laxminagar, 1200mm dia MS gravity main from Santhosh nagar to Asmangadh, 1200/1000 mm dia MS gravity main from Santhoshnagar to chilkalguda 1000mm dia MS pumping main from shaikpet to Madhapur 900mm dia MS gravity main of Allabanda reservoir under KWS Monitoring Section, SD-II, TD-III, Sahebngar for the period of (Two) 02 years