ZQ series of drill pipe power tong marked with III are developed types from ZQ203-100 power tong. The power tong can be fixed on the accommodation track for front and back walk. It can pass across the well head and go to the mouse hole for working. Master tong can move upward and downward. Walk and lift of the tong can be remote controlled and automatically handled. Especially suitable for the occation with small wellbay suface.
