bids are invited for custom bid for services - gun metal casting on conversion basis - gm casting (hallow) with machining on conversion basis 5¼ id x 7½ od x 12 length, 40 kg/each , gm casting (hallow) with machining on conversion basis 7¼ id x 9½ od x 12 length, 51 kg/each , gm casting (hallow) with machining on conversion basis 4¼ id x 6½ od x 12 length, 33 kg/each , gm casting (hallow) with machining on conversion basis 3¼ id x 5½ od x 12 length, 12 kg/each , gm casting (hallow) with machining on conversion basis 2½ id x 4½ od x 12 length, 18 kg/each , gm casting (hallow) with machining on conversion basis 80 mm id x 150 mm od x 300 mm length, 34 kg/each , gm casting (hallow) with machining on conversion basis 60 mm id x 115mm od x 300 mm length, 19 kg/each , gm casting (hallow) with machining on conversion basis 60 mm id x 125 mm od x 300 mm length, 24 kg/each , gm casting (hallow) with machining on conversion basis 80 mm id x 175mm od x 300 mm length, 32 kg/each , gm casting (hallow) with machining on conversion basis 50 mm id x 135mm od x 300 mm length, 31 kg/each , gm casting (hallow) with machining on conversion basis 75mm id x 155 mm od x 160 mm length, 20 kg/each , gm casting (hallow) with machining on conversion basis 70mm id x 185mm od x 175mm length, 34 kg/each , gm casting (hallow) with machining on conversion basis 32mm id x 100mm od x 300 mm length, 19 kg/each , gm casting (solid) with machining size 2½ od x 12 length 8kg/each (matrial - is : 25:1979) , gm casting (solid) with machining size 3 od x 12 length 11kg/each (matrial - is : 25:1979) , gm casting (solid) with machining size 4 od x 12 length 21kg/each (matrial - is : 25:1979) , g.m. bearing liner bottom half for roller shaft (all over machined) as per drawing no. b/92/c-1009/r-3 dated 24/06/2005 on conversion basis 130 kg/each ( material- is 25:1979) , lower half gm bearing for top roller as per drawing no. b/96/c-1150/r-3, dated 24/06/2005 on conversion basis wt. 215 kg. each bearing - 4 nos.) material is: 25:1979 , g.m. bearing (solid) for mill no. 4 discharge roller as per drawing no. b/2018/c-1457 approximate weight 410 kg. on conversion basis, material is : 25: 1979