L&H's iron roughneck is a mechanical device driven by hydraulic pressure,it is mainly used for dismounting wellhead column screw and applicable to all kinds of drilling rigs, it has the advantages of compact structure, flexible action, high degree of automation, can realize tool connection, all functions.It is mainly used by under the clamping pliers, shackle clamp, fast rotary clamp, a telescopic mechanism, lifting mechanism and mechanism.L&H's iron roughneck ontology design can be 30 degrees rotation and occlusion and in the deduction process ,it can be according to need to adjust the torque, through accurate torque to avoid drill pipe deformation.High torque rotary clamp design can take less occupied space.The clever design is your ideal choice.