... or inverter QD5-50/10T Model Double Girder Crane1.IntroductionThis crane mainly consists of strong bridge beams,trolley-travelling mechanism,crab and ... .8)8,(8/0.8)7,(7/0.7)Hoist trolley traversing2020202020Crane travellingFloor control20,3020,3020,3020,3020,30Cabin control45,6045 ... (depending on the span and lifting weight) QD5-50/10T Model Double Girder Overhead Crane