bids are invited for cement of 43 grade opc in sealed bags each weighing 50 kgs. the date of manufacture of cement should not be more than one month prior to the date of delivery. for keri , pcc bricks of size 230mm x 115mm x 75mm with min str of m 15 and conforming to is 456-1978. for keri , river sand conforming to is-383-1970. for keri , hard core stone agg 40-63mm confirming to is 383-1970. for keri , stone boulders 63 to 100 mm size conforming to is 383-1970. for keri , aggregate 40mm conforming to is 383-1970. for keri , aggregate 20mm conforming to is 383-1970. for keri total quantity : 53655