... reach 120 metersThe lifting speed can be single-speed or double-speed or even multi-speed with frequency inverters.The prefered ... is 2/1,4/2 or 4/1.The normal travelling speed is 20m/min, or 12.5,16,25,32 ... gauge of the double-girder hoist is 1200,1400,1600,1800,2000,2500 and 3000 in metre.The normal travelling speed is 20m ...