A type double girder gantry crane 1,The tower cross beam of all the cranes with the following parameters is as ... the right crawing, lifting capacity 5t,8t,10t,12.5t,all spans; lifting capacity 16/3.2t, span: 18m,22m ... be either rigidity leg or flexible leg when the crane span>30m.3,The A type double girder gantry ... crane has a good anti-wind stablity, however the ...