bids are invited for cement of 43 grade opc in sealed bags each weighting 50 kg. the date of manufacturing of cement should not be more than one month prior to the date of delivery. for keri , clean coarse river sand confirming to is 383-1970. for keri , aggregate 20mm conforming to is 383-1970. for keri , aggregate 40mm conforming to is 383-1970. for keri , hardcore of size 40 to 63 mm broken boulder stone confirm to is 383-1970. for keri , pcc bricks of size 230mmx115mm x75 mm with min str of m15 and conforming to is-456 is to 1978. for keri , cement of 43 grade opc in sealed bags each weighting 50 kg. the date of manufacturing of cement should not be more than one month prior to the date of delivery. for jwg , clean coarse river sand confirming to is 383-1970. for jwg , aggregate 20mm conforming to is 383- 1970. for jwg , aggregate 40mm conforming to is 383- 1970. for jwg , hardcore of size 40 to 63 mm broken boulder stone confirm to is 383-1970. for jwg , pcc bricks of size 230mmx115mm x75 mm with min str of m15 and conforming to is-456 is to 1978. for jwg