supply of cast steel bolster for casnub-22 nlb bogie (for modified separate type pivot) .cast steel bolster for casnub-22 nlb bogie (for modified separate type pivot) .,cast steel bolster for casnub-22 nlb bogie (for modified separate type pivot) as per rdso dr g. no. wd-89067- s/4, alt-13 (thirteen) or latest and rdso spec. no. wd-21- casnub-22 nlb-bogie-93 ( rev. 2 of july, 2002) with amendment no. 4 of feb 2010 or latest as per rdso drg. no.wd-89067-s-4, alt- 13. material & spec :must be confirming to spec. no.wd-21- casnub-22 nlb bogie-93, rev-2, amndt-5. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]