procurement of carb clad coated seat and disc for diffuser type ash intake valve installed in nuva feeder and carb clad coated gate plate for branch segregation valve installed in fly ash evacuation system of unit no.10 and 11 stps sarni. procurement of carb clad coated seat and disc for diffuser type ash intake valve installed in nuva feeder and carb clad coated gate plate for branch segregation valve installed in fly ash evacuation system of unit no.10 and 11 stps sarni. , purchase of carb clad coated seat & discfor 12”x10” diffuser type ash intake valve installed innuva feeder & carb clad coated gate plate for branch segregation valve installed in fly ash evacuation system of stps-iv, sarni , set of carb clad coated seat & disc of 12x10 diffuser type ash intake valve for nuva feedervalve disc ( as per drg. no. ahp-4 / valves / aiv-12x10 / 07 ) micro hardness: > 65 hrc of tribo sol clad coat proprietary tribo sol clad coat > 200?m on functional surfaces. base material: s.s martensitic 400 series h&t grade valve seat ( as per drg. no.. ahp-4 / valves / aiv-12x10 / 07 ) micro hardness: > 60 hrc of tribo sol clad coat proprietary tribo sol clad coat > 1500?m on functional surfaces. base material:s.s martensitic 400 series h&t grade , carb clad coated gate plate for branch segregation valvemicro hardness: > 60 hrc of tribo sol clad coat proprietary tribo sol clad coat > 1500?m on functional surfaces. base material: s.s 410 ( as per drg. no. ahp-4 / valves / bsv / 04 )