... in warehouse ,etc. 4.CE and SGS approved Model LD Hook Overhead Crane Features of product as follows ... : Model LD electric Double -girder Overhead Crane is widely ... 1,2,3,5,10,16,20Span (m) 7.5-22.5Mechanism travelling Speed (m/min)10 ,20, 30 45, ... 2*0.82*1.5Speed (r/min)13801380Electric Hoist Model CD1/MD1Lifting height6,9,12,18,24,30Lifting speed 8 ...