surface cleaning and painting of tower structures with single coat of red oxide and single coat of aluminium paint of (1) 220 kv bina-sagar line (2) 220 kv bina-vidisha line (3) 220 kv bin-i/c line (4) 132 kv lilo ganjbasoda line and (5) 132 kv bina-mungaoli line (total 2986.082 mt)