... . 2.Stable and reliable. 3.High efficiency WHR series rotary drilling rig specificationsPile machine is ideal equipment which ... , environmental protection, strong overload capacity, high degree ofautomationWHR series rotary drilling rig ModelSpecificationWHR150WHR180WHR200WHR250The maximum output torque(kN.m)150180200250Rotary ... ×3000×335614916×3000×335616600×3200×3500 WHR series rotary drilling rig