tender for de-shelling and re-shelling of mills rollers , de-shelling & re-shelling of mills rollers (semi couch type) size 825 x 1525 mm material should be as given below:- coarse grain cast iron having hardness 180 to 210 bhn. confirming to is 11201-1985. material composition:- i) carbon3.2% to 3.6% ii) magneese2.2 % to 3.2% iii) silcon1.2% to 2.2% iv) phosphorous 0.5% maximum. v) sulphur 0.15% max. duly machined and grooved as per drg no. …….. the checking of crack/defect of shaft has todone with ultrasonic testingof the shaft before casting ofeach roller and same ultrasonic test report of the shaft has also to be sent to pawal sugar mill. note:1. c.i material composition test report should be sent with roller. 2.gurantee for any casting /manufacturing defect would be one crushing season after fitted in headstock or 18 months from date of receipt of roller in palwal mill. , de-shelling & re-shelling of mills rollers (conventional type) size 825 x 1525 mm material should be as given below:- coarse grain cast iron having hardness 180 to 210 bhn. confirming to is 11201-1985. material composition:- i) carbon3.2% to 3.6% ii) magneese2.2 % to 3.2% iii) silcon1.2% to 2.2% iv) phosphorous 0.5%maximum. v) sulphur 0.15% maximum. duly machined and grooved as per drg no. …….. the checking of crack/defect of shaft has todone with ultrasonic testingof the shaft before casting ofeach roller and same ultrasonic test report of the shaft has also to be sent to pawal sugar mill. note:1. c.i material composition test report should be sent with roller. 2.gurantee for any casting /manufacturing defect would be one crushing season after fitted in headstock or 18 months from date of receipt of roller in palwal mill..