Gem Bids For Inlet Expansion Joint Non-metallic, For 1300 Mmdia. Si. Bab-42 Fd Fan, Drg. No. : Sketch No. 25007c-1, Outlet Expansion Joint Non-metallic, For 1300 Mmdia. Si. Bab-42 Fd Fan, Drg. No. : Sketch No. 25007c-