Overhead crane is a kind of multi- action hoisting machinery to vertical and horizontal carrying the weigh within certain limits, it also known as chain block or hoist. Manual operation crane will be used in small capacity hydropower plants to save cost, and operated by hand; Single girder electric crane will be used for lifting weight below 20T, and operated at ground or remote control; Double girder electric crane for lifting weight above 20T, and operated on high bridge or remote control. Our company can provide various specifications of crane according to clients requirements.