bids are invited for annual mechanical maintenance jobs of mill neutral thickener tailings and disposal area selective replacement of worn out steel structures fabrication , selective replacement of worn out steel structures erection , selective replacement of worn out steel structures dismantling , selective replacement of worn out chequerred plates or ms gratings fabrication , selective replacement of worn out chequerred plates or ms gratings erection , selective replacement of worn out chequerred plates or ms gratings dismantling , replacement including dismantling erection and alignment of coneyor pulleys ,fittings of idlers and rollers , replacement and erection of feed bend conical seal and flat seal wiper of , repair or replacement of conveyor belt , dismantling of gear box trommel screens torsion shaft feed anddischarge sleeve launder hydrocyclone underflow and overflow valves coupling mill liners and girth , erection of gear box trommel screens torsion shaft feed anddischarge sleeve launder hydrocyclone underflow and overflow valves coupling mill liners and girth , replacement of propeller shaft , replacement of propeller blades , replacement of agitator assemblynt , fabrication of pipe size 15 nb to 40 nb , erection of pipe size 15 nb to 40 nb , dismantling of pipe size 15 nb to 40 nb , fabrication of pipe size 50 nb to 80 nb , erection of pipe size 50 nb to 80 nb , dismantling of pipe size 50 nb to 80 nb , fabrication of pipe size 100 nb to 150 nb , erection of pipe size 100 nb to 150 nb , dismantling of pipe size 100 nb to 150 nb , fabrication of pipe size above 150 nb , erection of pipe size above 150 nb , dismantling of pipe size above 150 nb , erection of jammed pipe size above 150 nb , dismantling of jammed pipe size above 150 nb , mill feed end trunion bearing or insert changing , mill discharge end trunion bearing or insert changing , erection of liner fitting in different chutes , dismantling of liner fitting in different chutes , lubrication of equipments , overhauling or replacement of slurry pumps total quantity : 8501