procurement of non-metallic bellow used in esp outlet duct at boiler for unit-1 and 2,sgtpp. , procurement of non-metallic bellow used in esp outlet duct at boiler for unit-1 &2,sgtpp. , non metallic expansion joint,cloth for esp sgtpp flue duct ( non metallic expansion joint fabric cloth for joint size 3200x3000 mm, having total length 14300mm, width 400mm, design temperature 128deg.c, pressure 2050mmwc, expansion axial 76mm & lateral 24mm,material of construction woven glass fabric, needled glass felt, ptfe foil, both side elastomer coated glass fabric,super wool & resin bonded glass felt encased in ss wire mesh & wovenglass fabric.. used in flue duct just before & after esp . ) => limited