N-22ES electronic rotary borescope can be used to inspect the interior surface of pipelines with a diameter between 42 and 400mm. 

         It is mainly used for rapid diagnosis of welding quality, surface smoothness, corrosion, cracks, blockage and collapse, together with surface measurement and foreign objects removal. This industrial electronic endoscope is especially suited to check the pipelines with larger diameter and longer length. In recent years, it has been widely used in pipes, boiler pressure vessel, electric power, chemical industry, machinery manufacturing, shipbuilding, archeology, military weapons, customs and other fields.