Tower Crane 1,ISO9001-2000 2,safe operation 3,easy assemble 4,high quality and low price QTZ31.5 Tower Crane 1,tip load:0.66t 2,max load:3t 3,max lifting height:70m 4,working range:3-42m5,Rated lifting moment: 315KN.m6,Jacking speed: 0.5m/min7,Working voltage & frequency: 380V/50HZ QTZ31.5 (TC4207) Tower Crane