supply of c.s and c.i casting , cast steel casting : , cast steel crown pinion 17 nos. machine cut teeth as per drawing, material cast steel, is 2708-1993, gr.-3, tensile strength -690 mpa ( min ) , hardness 201 to 255 bhw, od-1020 mm, face widh 465 mm, bore 465 mm , -do- but on conversion basis with , machining & profile, teeth cuttingcharges , cast steel bearing housing of mill side roller bearing material is 2708-1993 gr.3 as per drg. , -do- but on conversion basis , machining charges , cast steel trash plate as per drawing, material is-2708-1993, gr.3 , but on conversion basis , machining & grooving charges , cast steel scrapper plate as per drawing, material 1030, grade 280 / 520n , -do- but on conversion basis , machining & grooving charges , c.i casting with proof machining whereas required : , c.i casting e.g. round, square etc as per sample / drg. , -do- but on conversion basis , machining charges of above