Shipbuilding door type crane is a big up weight, and big span, and big up rose height, and multifunctional, and efficient of door type lifting mechanical, designed for dock for large segment hull of closed and the hull parts of flip work, this project for our following 2008 for WINS China shipyard provides 200T shipbuilding door machine Hou of and a project, the up weight for 300T, span for 120 meters, up rose height for 57 meters, has input using, run situation good.