tender for procurement of 07 sets grinding element with buy back for 10e10 coal mill of stg-i boiler under bm dept. at bktps. , grinding ring,top,indigeneous for ball mill 10e10 ,initial depth of ring-105 mm additional data: mat. high chrome , grinding ball ,indigeneous,770 to 774 mm for ball mill 10e10 (1 set=10 balls),ball od: 770-774 mm,id: 520 mm additional data: mat. high chrome , grinding ring,bottom,indegenious for ball mill 10e10 ,initial depth of ring 100 mm.ms,band (dimension 25 mm thick x100 mm width) is required t o be shrink fit with bottom grinding ring for fixing of rotary throat additional data: mat. high chrome , grinding ball,fill in,indigeneous for ball mill 10e10 size,699 to 702 mm,ball od: 699-702 mm,id 520 mm additional data: mat. high chrome , buy-back of used grinding elements (1 set of grinding element comprising 1 no. worn out top ring & 1 no. worn out bottom ring and 11 nos. of worn out balls.)