... 2.5t to 16t, which include QTG25, QTZ25, QTZ31.5, QTZ40, QTZ63, QTZ80, QTZ100, QTZ125, QTZ160 and QTZ260 ... customers in different construction fields. parameters QTZ 31.5 series 3808 Maximum rated Torque(KN.m)315Maximum lifting ... lifting BeamΦ76x6 Φ76x4.5Standard section dimension (mm) 1494x1494x2200Matching motorThree speedsDouble speedsMaterials of section mast∠140x10 ∠125x10∠100x10 Q235BParallel ...