purchase of 66kv d/c and m/c, 132 kv d/c and 220kv d/c tower materials including supply of n/b as per latest specifications and schedule-a on price variation basis (pv applicable on both items i.e. transmission tower material and bolt nuts) against tender no.ace(proc)/e-2809/i/66kv to 220kv tower material / 2021-22 .