supply of isi marked di(k-9) pipes for the work laying of pipe line with feeding from clear water rising main of mega pipe water supply project of rwss wing for water supply to chandbali n.a.c. under migration to surface water source from ground wate , supply of isi marked centrifugally cast (spun)ductile iron(k-9) socket & spigot pressure pipes in standard length with inside cement mortar lining and external bituminous coating conforming tois 8329:2000and its subsequent amendments & isi marked sb/epdm rubber gasket (confirming to is:5382) for push-on type flexible joints of di pipes,including inspection, transportation, handling, loading, unloading, stacking at consignees store yard, etc., but excluding gst, all complete as per specification & direction of engineer-in-charge (cost of rubber gaskets shall be inclusive in the cost of pipes of different diameters.) , i) 200mm dia d.i socket & spigot pressure pipe [k-9] , ii) 250mm dia d.i socket & spigot pressure pipe [k-9] , iii) 300mm dia d.i socket & spigot pressure pipe [k-9]