Tender For Work Of Fabrication / Removal Or Eroded Duct Pieces, Repair/Rectification Of Various- Hot Primary/Secondary Air & Cold Air Duct, Flue Gas Duct From Eco Outlet To Id Fan Out Duct And Surrounding Duct Structure /Support Of 210 Mw Structure/Support Of 210 Mw Unit No. 4, 5, 6 & 7 At Wanakbori Tps.