Gantry cranes: Single girder& double girder gantry cranes ...
Single girder gantry crane is usually adopted box shaped gantry girder design with the features of simple structure easy manufacturing and installation, and light self-weight. Compared with double-girder gantry cranes, the overall stiffness of single girder gantry crane is weaker and usually used when the loads Q≤50 ton and the span S≤35m.
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