tender for procurement of ring hammer made of cast manganese toothed for seven 07 numbers of ring granulators crusher installed at stage i and ii chp mm department sgtpp wbpdcl- 1 procurement of ring hammer (made of cast manganese) toothed for seven (07) numbers of ring granulators (crusher) installed at stage-i & ii chp-mm department , sgtpp / wbpdcl 2 ring hammer -toothed for cr sgtpp1 ring hammer (toothed); drawing no.wbpdcl/sgtpp/chp/mm/01(3-273-068/3-273-a-068) ( moc:mn steel as per is:276-1978,grade-iii,hardness:229 bhn(max),weight:22kg (approx.); tolerance:+/-2.0% and all dimension as per drawing,& dimensional tolerance as per is:4897 accuracy class-ii. )