Downhole Motor for Oil & Gas Well Drilling Langfang Zhongtuo International Trading Co., Ltd. Base Info Model NO.:7LZ172-6Manufacturing Process:CNC MillingSurface Treatment:Chrome CoatedMaterial:AlloyHS Code:84122910 Description Pre:High Voltage Induction Motor Next:Horizontal Well/Conventional Well Drilling Used Dual Act Hydraulic-Mechanical Drilling Jar