Gem bids for Inlet Expansion Joint Non-Metallic, For 1420 Mmdia. Si. Bab-65/2 Fd Fan, Drg. No. : Sketch No. 25041C, Outlet Expansion Joint Non-Metallic, For 1420 Mmdia. Si. Bab-65/2 Fd Fan, Drg. No. : Sketch No. 25041