A Goliath Crane (Also known as Gantry Cranes) is a kind of overhead crane having a single or double girder establishment supported by separate legs that move on wheels or rail system or along a track. They are generally taken into consideration when there is a reason not to involve an overhead runway system.Full gantry or semi-gantry systems are often utilized for heavy fabrication works, or in some kind of outdoor yard, like steelyards, rail yards, scrap yards and shipping and container yards.