supply of bolster liner for cast steel bolster for modified separate type pivot to rdso drawing no.- wd 85079- s/3 alt.7 item no.2 material as per drawing and conforming to rdso specn. no. wd-21-casnub-22 nlb-93 rev-2 july 02 with amendment no. 6 of july 2020.bolster liner for cast steel bolster for modified separate type pivot to rdso drawing no.- wd 85079- s/3 alt.7 item no.2 material as per drawing and conforming to rdso specn. no. wd-21-casnub-22 nlb-93 rev-2 july 02 with amendment no. 6 of july 2020.,bolster liner for cast steel bolster for modified separate type pivot to rdso drawing no. - wd 85079- s/3 alt.7 item no.2 material as per drawing and conforming to rdso specn. no. wd-21-c asnub-22 nlb-93 rev-2 july 02 with amendment no. 6 of july 2020. [ warranty period: 30 months af ter the date of delivery ] ]