procurement of spares of scraper, knife edge gate valve ,journal head and mpo liners, grinding roll lock nut and ss liner for of xrp-883 coal mill of 210mw atps, mppgcl, chachai , scraper mn steel mn steel composition:- c - 0.3 to 0.4%, mn - 1.6 to 1.9%, p- 0.05% max.,s- 0.05% max. hardness – 140 to 240 bhn as per drg. no. atps/bm iii/ 62a , scraper holder cast steel along with pins(as per drawing)cast steel composition :- c-0.2 to 0 .35%, mn - 0.6 to 0.9%, si- 0.05 to 0.35% s- 0.06% max. hardness – 143 to 193 bhn as per drg. no. atps/bm iii/ 62b , s.s. plate for slide gate of knife edge gate valve ,material: s.s.-304 as per drg. no. atps/b/ 69a , s.s. spindle alongwith phosphorus branze bush and s.s, check nut of knief edge gate valvespindle-ss304 ,bush- phosphorus branze as per drg. no. atps/b/ 69b , journal head liner with welding plugs.item no.-iias per drg. no. atps/bm iii/ 76weight = 30 kg approx , journal head liner with welding plugs. item no.-iiias per drg. no. atps/bm iii/ 76weight = 24 kg approx , mpo-linersdrg. no. atps/bm iii/ 109 weight = 30 kg approx , grinding roll lock nut for coal millxrp -883 for210 mw boiler. as per drawingmaterial carbon steel c – 0.4 to 0.5%, mn. – 0.91%,si. – 0.5% p&s 0.05% max. each.hardness - 400 bhn (min)as per drg. no. atps/bm iii/ 06 , s.s. liner plates size 1000mm* 1000mm*6mmmaterial:-ss-304