drilling rig,land drilling rigs,drilling rig equipment Model:ZJ30L, ZJ40L, ZJ40L,ZJ70 Description 1) ... cardan shaft.drilling rig,land drilling rigs,drilling rig equipment..Parameter Model, drilling rig ZJ30L ZJ40LZJ50LZJ70LNominal drilling depth, ... +2R4+2RDerrick (mast)TypeAKKKHeight (m)41434545Max. load, kN(lbs)1700225031504500SubstructureTypeModule-mounted, or box on boxdrillfloor height, m 5/5. ...