If the requirements of the door width, work speed is high, or often lifting heavy pieces, long pieces, you should choose double beam gantry crane. Gantry crane span is an important factor affecting the quality of the crane itself.
In the selection, the span should be minimized, subject to the conditions of use of the equipment and compliance with the span series.
Under normal circumstances, from the weight of 50t below the span of 35m or less, no special use requirements, should use a single main beam type.
