Gem Bids For 1077 Crash Barrier Of Mild Steel Galvanised Round Nut Bolt Metal Double Beam Crash Barrier With A Steel Post Of 3x3x1800mm Convex Mirror 80cm Dia Alongwith 75 Dia Ms Pole Upto 3000m Height Cement Opc 43 Grade In Polythene Bags Coarse Sand Stone Aggregate Sahll Be Crushed Stone 20mm Graded Conforming To Is 383 To 1970