providing, supplying, laying, jointing, testing and commissioning of 7545 mtr. clear water pumping main 100 to 250 mm diameter ductile iron pipes class k-9 (100mm - 50 mtr., 250mm - 7495mtr.) including excavation refilling of tranches with valves, specials and all allied civil works testing and trial run for 3 (three) months and operation and maintenance for 6 (six) months with all labour and specials under chotiya group water supply scheme.(fourth call) .
