Erection of transmission towers May 18, 2018 | Asia Pacific Tenders Competitive bids are invited for the erection of 220 kV transmission towers (TD1+18 and TD1+27) at the 220 kV Biyagama–Kothmale transmission line for landslide issue in Bulathkohupitiya area. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password