supply of casnub 22 nlb bogie for with friction damping arrangement suita ble for bcna wagon as per drg no wd 89073 s 2 alt 11 or latest item no 1 to 18 except item no 4 5 6 7 8 9 conforming to rdso str no wd 21 casnub 22 nlb bogie 93 rev 2 with amendme nt no 06 of july 20 or latest warranty period 30 months after the date of delivery