desh.resh of mill roller desh.resh of mill roller , de-shelling, re-shelling & grooving of conventional mill roller size 775x1450 mm, as per deg. no. 510 / 93. the shell should be of course grain cast iron without blow holes having 180-200 bhn hardness, mtc spectro test and utc and hardness test certificate from approved source is required before dispatch specificationofmaterial is as per is 11201-1985. ( a ) carbon 3.2-3.6% ( b ) manganese 2.2-3.2% ( c ) silicon 1.5-2.2% ( d ) phosphorous 0.5% max. ( e ) sulphur 0.15% max. also quote rate for semi kouch and lotus roller for above mentioned rollers after de-shelling each roller shaft should be checked ultrasonically, & ultrasonic test report of each roller should be submitted. grooving in roller should be as per our requirement.. one side freight will be borne by the tenderer.