The double girder overhead crane is composed of a beam, a lifting mechanism, a trolley traveling mechanism, a crane traveling mechanism, a cabin or a manual controller and an electrical control system. The trolley can move horizontally on the track. This type of crane has many features, is lightweight, easy to install and maintain, and is typically used in manufacturing or maintenance applications. The cross beam is integral without welding, making the structure more reasonable and reliable.

The European double-girder bridge crane is a new type of double-girder bridge crane. Compared with ordinary double-girder bridge cranes, the NLH adopts FEM standards, has a more compact structure, more stable operation, and low noise.