The circular concrete pole is a power support component that replaced wooden and metal poles. Domestic research and development began in the mid-20th century, and mass production and widespread adoption were achieved through the maturation of centrifugal molding technology. These poles are made from cement and aggregates, reinforced with a steel cage, and formed by centrifugal casting, resulting in a circular thin-walled structure. They offer excellent compression and corrosion resistance, strong stability, convenient construction, and cost-effectiveness, making them a core support for urban and rural power grids and communication overhead lines, with a wide range of applications.

Our company has successively undertaken national supervision and random inspections of circular concrete poles in 2002 and 2006, commissioned inspections by Jiangsu Electric Power Test and Research Institute in 2009, provincial supervision and random inspections in Jiangsu in 2012 and 2014, as well as related risk monitoring in 2014. We also conducted commissioned inspections for Jiangsu Electric Power Research Institute from 2015 to 2023, and have continuously undertaken pole inspection work for State Grid Shanghai Electric Power Company since 2015.