supply of air spring assembly 120 kn capacity, 140 kn capacity & 160 kn capacity. , air spring assembly 120 kn capacity for lhb coaches as per rdso specification no: rdso/cg/s/23002 rev nil or latest, make- avadh rail [ warranty period: 72 months after the date of deli very ] ] , air spring assembly 160 kn capacity for lhb coaches as per rdso specification no: rdso/cg/s/23002 rev nil or latest, make- avadh rail [ warranty period: 72 months after the date of deli very ] ] , air spring assembly 140 kn capacity for lhb coaches as per rdso specification no: rdso/cg/s/23002 rev nil or latest, make- avadh rail [ warranty period: 72 months after the date of deli very ] ]