... hoist is 2/1,4/2 or 4/1.The normal travelling speed is 20m/min, or 12.5,16,25 ... /6.5 and 20/5 m/min by request.The normal rail gauge of the double-girder hoist is 1200,1400 ... ,1600,1800,2000,2500 and 3000 in metre.The normal travelling speed is 20m/min, or 32,40,20/6 ...