bids are invited for cement of 43 grade opc in sealed bags each weighting 50 kg. for narian , clean coarse river sand confirming to is 383-1970. for narian , aggregate 20 mm conforming to is 383-1970. for narian , aggregate 40 mm conforming to is 383-1970. for narian , hardcore of size 40 to 63mm broken boulder stone confirm to is 383-1970. for narian , pcc bricks of size 230 mm x 115 mm x 75 mm with min str of m15 and conforming to is 456- 1978. for narian , machine pressed precast concrete inter locking paver block any shape and size confirming to is - 15658-2006 of 40 mm thickness m-30 grade for narian , cement of 43 grade opc in sealed bags each weighting 50 kg. for keri , clean coarse river sand confirming to is 383-1970. for keri , aggregate 20 mm conforming to is 383-1970. for keri , aggregate 40 mm conforming to is 383-1970. for keri , hardcore of size 40 to 63mm broken boulder stone confirm to is 383-1970. for keri , pcc bricks of size 230 mm x 115 mm x 75 mm with min str of m15 and conforming to is 456- 1978. for keri , machine pressed precast concrete inter locking paver block any shape and size confirming to is - 15658-2006 of 40 mm thickness m-30 grade for keri , cement of 43 grade opc in sealed bags each weighting 50 kg. for jwg , clean coarse river sand confirming to is 383-1970. for jwg , aggregate 20 mm conforming to is 383-1970. for jwg , aggregate 40 mm conforming to is 383-1970. for jwg , hardcore of size 40 to 63mm broken boulder stone confirm to is 383-1970. for jwg , pcc bricks of size 230 mm x 115 mm x 75 mm with min str of m15 and conforming to is 456- 1978. for jwg , machine pressed precast concrete inter locking paver block any shape and size confirming to is - 15658-2006 of 40 mm thickness m-30 grade for jwg