... 3.Speed: single or inverter 4.A factory QD5-50/10T Model Double Girder Crane1.IntroductionThis crane mainly consists of strong bridge ... capacity 5tons,10tons,16/3.2tons,20/5tons,32/5tons,50/10tons,75/20tons,100/20tons,100/30tons,125/30tons,150 ... demandWidth of rail(mm)50,60,68,70(depending on the span and lifting weight) QD5-50/10T Model Double Girder Overhead Crane ...