Gem Bids For Construction Material Of Op Tr, 6551 Supply Of W Metal Beam Crash Barrier And All Other Specification As Per Rfp Cement Opc And All Other Specification As Per Rfp Coarse Sand Free From Vegetation And All Other Specification As Per Rfp Coarse Aggregate And All Other Specification As Per Rfp Standard Detonator And All Other Specification As Per Rfp Electric Detonator And All Other Specification As Per Rfp Cordex And All Other Specification As Per Rfp Explosive And All Other Specification As Per Rfp Heavy Duty Rcc Hume Pipe And All Other Specification As Per Rfp