de-shelling / re-shelling and grooving of mill rollers and new roller shell and shaft de-shelling / re-shelling and grooving of mill rollers and new roller shell and shaft , de-shelling & re-shelling and grooving of mill roller, size- 825 x 1525, conventional type, as per drawing , de-shelling & re-shelling and grooving of mill roller, size- 825 x 1525, lotus type, as per drawing , forged steel shaft for mill roller proof, machined, normalized, size- 440 mm od x 4000 mm long, material- 40c8, bis-1570 / 1979, hardness- 175-225 bhn, uts-58 kg. / sq. mm with ultrasonic test certificate, as per drawing material , cast iron shell for new roller shaft with fitting & grooving as per drawing, size- 825 x 1525 mm, bore- 431 to 433 mm, material composition, c-3.2 to 3.6%, si- 1.2 to 2.25%, mn- 2.2 to 3.2%, s-0.15% max., p-0.5% max.