... . Rig ModelZJ20DBSZJ30DBSZJ40DBSZJ50DBSZJ70DBSNominal drilling depth, 127mm(5)DP, m 20003000400050007000Max. hook load, kN(t)1350(135)1700(170)2250(225)3150(315 ... driveDerrick (mast)TypeK or telescopingK or AKKKHeight, m31 or 3941434545Max. load, kN(lbs)9001700225031504500SubstructureTypebox on box, or telescopingdual-liftingdual-lifting or ...