tender for procurement of different spares of economiser hopper and air preheater hopper ashing system for unit 2 overahauling under ahpmm i, sgtpp , procurement of different spares of economiser hopper and air preheater hopper ashing system for unit 2 overahauling under ahpmm i, sgtpp. , flushing apparatus for eco-hopper for economiser hopper dcips drawing no-25p06-1b-t-422,nc-1a with ss liner & nozzle ( with 8 mm thk ss 410 liner ) , expansion joint bellow for eco hopper for economiser hopper dcips drawing no-25p06-1b-t-781,water trough type , adaptor,ms,top-600x600,btm od-343,ht-250 for connection below economizer hopper drawing no 25p06-1b-t- 940 sheet 5. top side flange square shape of size 600 mm, bottom flange round shape od 343mm, height 250mm. 10 mm , vert. disc gate comp assy with actuator 8 inlet of air preheater hopper as per dcips dwg no: 25p08-1b-t-034