750kV and below transmission line Steel tower As the traditional equipment of
transmission line, steel tower is featured of widely application,
standardized design and matured techniques, showing the advantage
and universal applicability in miscellaneous voltages and
transmission distance. The steel towers are commonly used in key
power structures of State Grid. In 750kV Guanting-Lanzhou trail
transmission line, the products enjoy a prestige from owner,
supervision units and construction units.