Supplying, Fabrication, Assembling and erection of steel through girders / plate, Girders/composite girders for 21 Nos major bridges having total 91 spans (24.4m (CG) X 2 No's, 30.50m x 1 no., 45.70m x 38 no's, 61.0m x 18 no's, 28.50m x 1 no, 78.8m x 21 no's, 103.50m x 10 no's), including metalizing of members, supply fitting & fixing of bearings, supply of channel sleepers / H-beam sleepers, track linking, painting and other ancillary works in between stations Bairabi and Sairang in connection with the construction of new GB railway line from Bairabi and Sairang in connection with the construction of NEW BG Railway line from Bairabi to Sairang (Mizoram) under Northeast Frontier Railway