bids are invited for excavation for foundation up to 1.5 m depth including sorting out stacking of useful material and disposing off the excavated stuff up to 50 meter soil lead , providing and supplying d. i. k-9 grade pipes for following nominal bore diameter with internal cement mortar lining including all taxes , lowering laying jointing di pipes suitable for tyton cement , providing and supplying isi mark ci sluice valves butterfly valves , providing and supplying ci air valves of approved make quality of following class , refilling the pipeline trenches including ramming, watering consolidatingdesposal of surplus stuff as directed within a radius of 3 km , sluice valves , air valves single ball flanged , manufacturesupply and delivery of cast iron detachable joints , framesuitable for 50cm opening of mh , cover suitable for 50cmopening of mh , construction of valves chambers in brick orbela stone masonry total quantity : 2848