Energy Transmission and Distribution Transmission Lines High Voltage Substations Distribution Networks Water Transportation Building and Architecture Oil, Gas and Petrochemical Industries Industry and Mining Environment Retrofitting 400/230 kV Substation of Northern Zahedan Mehr 400/230 kV Substation Persian Gulf Saba Steel 230/33 kV GIS Substation Shahid Sameie 400/63 kV Substation Abarkooh 230/132 kV Substation Bahreman 400/132/20 kV Substation 1 | 2 | 3 | 4